Electronics / microcontrollers.

Took just a few months to go from, "I can make a wifi connected weather station for like $20 in components!?" to "oscilloscopes cost how much?"

Self-hosting apps / homelab

Getting used enterprise gear is not prohibitively expensive, but the electric bills balloon very quickly.

Knitting. Super cheap to start, you can pick up a set of needles and some acrylic yarn for under $20. But when you start getting into nice yarns and bigger pieces, you are spending hundreds of dollars on yarn alone for a blanket or a sweater. And you want nice needles in all sizes as well as all types (double pointed, regular and circular)… more hundreds of dollars.

Moral of the story is if a friend knits you something with nice yarn, please appreciate it. Lots of effort and thought went into it.

Coffee.

I blame James Hoffman entirely.

Within a year I went from:

Drinking instant coffee at home, but really enjoying "proper coffee"

To

Buying a cafetiere (~£15) + preground coffee

To

Buying a Nespresso (~£60 on offer) + pods

To

Buying a budget espresso machine (~£120) + preground coffee

To

Wasting my money on a cheap manual coffee grinder (~£50) + beans

To

Immediately replacing it with an entry level Sage grinder (~£170)

To

Buying an entry Level "proper" espresso machine (~£700)

It took me a good 2-3 weeks of practicing and dialling in before pulling a good shot of coffee that I'd actually want to drink, but by that point it was also about learning a new skill, learning how different aspects of the process affect the end result and learning how to make all sorts of different espresso-based drinks.

My girlfriend thought I was nuts at first, but a year or so later even she agrees it was worth the investment. I still for the life of me can't get the hang of latte art though.

The problem is now though that I'm a waaaay more critical of coffee from coffee shops, because I spent a long time making bad coffee whilst learning!

Mechanical keyboards. The next one is my endgame, I swear. Just one more groupbuy for those keycaps. It never truly ends.

Running.

Was supposed to be the cheapest way to get exercise. You can do it right from your front door, no gym subscriptions, no specialized equipment (some people will tell you you don't even need shoes), and it's far and away the best time-value exercise I've ever found. You can get away with like 20 minutes 3-4 times a week and be doing great.

Well, turns out I love running and I love distance running so I'm now putting up enough miles to need new shoes 2-3 times a year, a nice Garmin smart watch and heart rate monitor to track my progress, sign-ups for several long-distance races each year, shorts, socks, you get the picture.

Could I do it cheaper? Yeah. But at the end of the day it's a hobby and I like it

Growing cannabis (legal here in Canada)

…anyone can grow weed. Growing GOOD weed is an art.

I bought myself a raspberry pi for my birthday a few years ago.

I now have thousands of dollars in hardware sitting in a server rack in my office. Whoops.

This is not the first post where I feel it but I love it so much that we have a lot of people on Lemmy that can talk about things not related to computers!

Board games. Things get expensive once you start collecting

For me it is maybe camping.

I just tested my new sleeping bag - under 0.5kg rated to -5°C. And realised that I bought/ replaced lots of gear to higher quality gear over few years.

Coffee. I'm in a coffee producing country. It could be as cheap as grabbing a bag from the coffee institute (really good and cheap), a cloth filter and call it a day. Instead, I'm on my second espresso machine, fourth grinder, second portafilter set, and have all the doodads to make it just how I like it.

I needed a new saucepan.

I've now replaced half my kitchen.

Reading. Bear with me…you start by getting a cheap physical or digital copy of the book. Then you fall in love with the book/author. Then you have to buy all the books by that author…but not the cheap editions…the fancy editions! You need to display these babies! And oh! They sell cool collectors items that would be perfect for the book shelf! Rinse and repeat for so…so many books. Sigh.

Fountain pens - I started with a 30 euro Parker but it seems like just one is never enough.

I have autism and ADHD, so all of them:

• Cycling
• Bicycle touring
• Skateboarding
• Vert Skateboarding
• Freestyle Skateboarding
• Retro Video Gaming
• Drawing
• Reading
• Programming and Raspberry Pi's

That's only my 30's which is the last 4 years. Hobbies for me are normally short and fierce obsessions when I start, they eventually slow down into a more 'normal' pasttime that I do sometimes to past the time.

3d printing. I started out with a cheapish Chinese model, got annoyed by the lack of accuracy and bought a Prusa.
Then there’s the filaments, accessories, post processing stuff... I own a Dremel now for some reason!
And I’m constantly eyeing those resin 3d printers, telling myself the higher resolution is totally worth it…
The only thing saving my bank account is my low attention span and dozens of other interests :)

Gardening.

Containers are surprisingly expensive. And you need a lot of soil to fill them, which gets expensive too. Then it's impossible to only buy the seeds you need, when there are so many cool varieties...

Farming - family has been doing it for ~5 generations. I'd say we have put in about $10 M dollars over time (adjusted for inflation).

What's that dear? It's a way of life/occupation . . . are you sure? Seems like it must be a hobby given the return we've made on it over the years. Well, if you're sure.

My wife said that farming is technically an occupation and not a hobby. I still have my doubts given how much we have thrown away on it over the years, but I don't like to disagree with her (she's usually right).

Motorcycle riding, done the right way.

Bought a decent street bike to start on, learn the ropes for several years, had the occasional mishhap or two which I fixed by myself. Still, cost money to fix things right?

Upgraded to a proper sport bike and realized how much fun it is, also with a new level of danger involved. Still, I wasn't an idiot into things right. Bought 100% proper gear, including a track suit, good helmet, gloves, etc. as any motorcyclist knows, you'll eventually drop your bike, which I did. Again, fixing it yourself is certainly an option, but also again, it cost money.

Then, I made the mistake of going to my first track day. They will allow you to use your own motorcycle as long as you prep it correctly and have decent tires and safety gear. This was an absolute game changer, and I was hooked harder than a heroin addict with an unlimited bank account. Unfortunately, I am neither of those two categories, and track days only get more expensive the deeper you get into them. First of all, they are not cheap to begin with. A decent track day will set you back 300 to $500 just to get on the track. Then, to really get the most out of it, you should have true racing tires with tire warmers. Then there's the matter of getting your bike to the track, race fuel, a place to hang out, etc etc etc. The list goes on and on.

Bicycling for me. Started off with a cheap old bike that I tried keeping in as goid condition as possible without spending too much on it. Problem with old bikes is wear and tear so things break and new old parts are hard to cheaply. So it became a hackjob. Then got me a new one and realised riding on roads only got boring so I started experimenting with gravel and singletrack.

Guess what? Time for a new bike. And a more expensive one. Carbon. And to maintain it I needed more tools. Also new tubes as the spare ones I had didn't fit that big of tyres. Also moved to a new place and now I got a MTB arena within a few km from home. So of course I had to get me one of those. And to maintain the suspension I needed new stuff, oils and tools.

Clothing. Bags. Events. It becomes a lot after a while.

Also planning for bike nr4, a steel fatbike. Promised myself not to buy anything this year, but the year is soon over...

Did I mention bikepacking? Yeah that is another big black hole of expenses. But a fair bit of overlap with backpacking so costs are split.

Photography.

I started to really get into it back in 2015 with a Sony A6000 and a kit lens. Then you buy more, higher quality lenses. Then you buy better camera bodies with full frame sensor, then lenses that are full frame compatible. Then the various odds and end accessories. Then trips around the world to take pictures of things.

I have taken a break from photography recently, on account that having a kid doesn't allow me a lot of opportunity to edit my photos anymore. They say the best camera you have is the one that is on you. That has proven to be true while I try to be as present as possible around my daughter. I can quickly take out my phone, capture the moment and it will take care of most of the post processing edits that I can share with family later.

Tabletop RPG. I started in High school, you need only paper a pen and a set of dice, right ? All the rules can be found online anyway, right ?

But it's so much better to have the physical books. And you need more than one dice of each obviously. And this nice metal dice looks very good. I obviously need different set of dice with colors pattern that match my different characters.

Speaking of characters, I need mini. I could get the cheap basic one of course, but the lead ones looks sooo much better.

And I obviously need custom models for all my characters.

Several years later, with a disposable income and I added maps, tokens, terrains, cards, ect. Even a tablet that I use only for this. I'm now limited by the storage place available in my flat (maybe for my own good).

Playing music. Started on a shitty hand-me-down acoustic guitar. Got a better guitar. Got an electric. Got a better amp. Got a couple of pedals. Got a better amp. Got like 6 more amps, some cabs, 5 more guitars, a huge pedalboard, a cello, a keyboard, an audio interface, attenuators, mics, etc etc.

You gotta understand... I need all this stuff. There are subtle differences that you've never noticed before but will probably hear once I do an a/b comparison for you, and I absolutely must get an AC15 next to round out the collection instead of buckling down and recording something.

Mechanical pencils. You can go from $6 Kuru Toga Advances to $60 rOtring 800s to $100+ imported Japan region exclusive Kuru Toga Dives

Watercolor.

Children play with $5 palettes. Apparently I pay $20 for a single color tube.

Flight simming. Started out with a cheap joystick. Now I have an expensive one, throttle quadrants, rudder pedals, a vr headset and I've built myself a button box and a flight seat. And I'm now I want a helicopter collective. Oh well..

Cycling.

You can certainly do it on an 300€ bike, but who would want that if you can pay 300€ for the helmet alone.

Houseplants.

It started with a little green in the living room and suddenly turned into a full grown, humid, highly poisonous indoor jungle that’s thirsty as fuck. And it turns out that exotic plants, fancy pots, growing lights, different types of soil for different species, fertilizers, and dozens of liters of water every day are somehow expensive…

Edit: yes, I love it

I am probably too late to this... But here goes.

Every damn time I get into something, I over do it.

I spent $13k on my kitchen stove, this one keeps giving, but that is $13,000.00 USD! Just for my kitchen stove. My range hood because it is required with my high output stove was $3k, and then let's talk makeup air to replace what is taken out by it.

Or what about woodworking? Yep, I wanted to do it, and still do. I have a half completed work bench, and some basic tools... That will be about $2k...

Let's buy a boat! Yep 29 years old, runs great... Break out another thousand...

But most recently, Plex... You know, let's get rid of subscriptions... Yeah, this year alone I have put $900 or so into that. Yep I sure saved money on canceling Netflix!

Mechanical keyboards. Picked up a keychron for cheap. Decided it was too loud, decided to change the switches. Then the keycaps. Now I'm ordering barebones keyboards and artisan custom keycaps. This shit is an addiction.

PLANTS, LOTS OF THEM

Selfhosting media

selfhosting/homelab. Originally started just using retired gaming PC parts to build a server. All it cost was the power to run the system. Years later and with more things/content I have, I just added a 5x 18tb hard drives and 3x 8tb. Just the 5 18tb drives was like $1500.

Sex toys. My collection is worth more than my car.

Solving the Rubik's cube

You either get into speedcubing and get high end cubes to improve your performance, at least of the official categories and a couple must haves like the Mirror cube.

And / Or

You start collecting cubes and puzzles of all kinds and shapes (yes, even non-cubical :o). You start to acquire custom cubes built by hand by artesians or niche brands.

For the love of what's good in this world, stick to that one budget MJC set of competitive cubes until you are actually 10 or 20 seconds behind the world record

Espresso.

It started with a second hand cheap machine from my grandmother as a gift for Christmas.

Then I bought a delonghi grinder for £50 and a used delonghi dedica for £60.

Then I upgraded the grinder to a baratza sette for £300.

Then I upgraded the espresso machine to a Lelit Bianca for £2000

Then I bought an EG-1 grinder for £3000

Now I'm looking to upgrade my machine soon.

Also I bought acaia scales and a puqpress and various coffee related things along the way, as well as spending essentially £10 a week on beans

House plants. Sure a few mass-market plants are dirt cheap, but soon you get into unusual plants, plants with special needs, hundreds/thousands of plants, grow lights, grow racks, terrariums, automated watering systems…

Magic the Gathering..

Music production. You start with pirated FL Studio and sone freeware plugins and the next thing you know is you're planing your hone studio with room treatment, expensive monitors, an expensive interface, aonther evrn more expensive interface, that one vintage compressor you absolutely need, a tape machine, and then you want I synthesizer, just a small, versaitle one, and next thing you know is you're buying the second euro rack for your mod synth because there wasn't enough space in the first one, because you need that one filter, and since you got lots of free slots now, why not buy some more fx. Fx can't hurt, right? And maybe one oscillator, you always wanted a fifth one...