I run AdGuard Home (mostly for malware domain blocking and DNS caching) on my home server, and the Pi acts as a secondary DNS server. I use AdGuardHome-Sync to keep the config in sync across the two.

I've got one as a Pi Hole, one as a Kodi box, and a few others I keep around as basically electronic multitools.

Open Media Vault on a pi setup with external hard drive. Mainly for Samba Shares, and added the DAAP server. And since it comes with portainer I used that to setup HomeAssistant, Syncthing, CUPS, kanboard, whoogle, and Trilium Notes. Amazing little piece of tech.

I've got several for random little tasks that crop up, but main use is for the conbee II I have running the zigbee network for all the smart lights. I've got a UPS hat using some old 26650 cells for battery backup, mostly so that if power cuts off I don't run into any issues with the setup and the rare cases where I have to take the power off the server rack for whatever reason. RPi has actually been rock solid for couple years now so no issues with that side, wife approval factor has likewise been high

Also got a Turing Pi but haven't had a change to play with it too much yet. For most everything else I'm running a docker and VMs in TrueNAS, but would probably change that setup at some point..

I used a pi 3 to host a Foundry server (TTRPG software).

I use Docker to simplify things, since I run two instances of it. Simple port forwarding setup within the docker container. the main reason I used a pi instead of my computer is so my players could access their dnd stuff all the time.

I stopped because I switched ISPs and they won't let me port-forward. My vpn supports it but the latency isn't ideal. I host the same thing through a cheap server now.

One runs Home Assistant (Pi4), and an older one runs RetroPi (Pi3) for my arcade cabinet.

I have another Pi3 that I used to use as a Steam Streaming device to put my PC games on the projector.

Pi 4 running Home Assistant.

A second one sitting in a box meant to be the first of a cluster, until they disapeared

I have Home Assistant on one and Kodi (Libreelec) on another

I'm only using Pi 4 hardware:

• OpenWrt gigabit routers with SQM, multiple locations
• Home Assistant Yellow
• NAS with RAID1 (mirror), deprecated

use it for home assistant. I'm astonished because my test install from years ago on a pi that's around 7 years old is going with no intervention aside from updates. it's crazy robust.

for a while my laptop was slow and I needed a test local environment rebuilding with webpack so I set up a newer pi that ran the Dev servers so my laptop didn't choke. I've got a better laptop now.

I've been running OSMC (Kodi on Debian) plus a few useful things like maintaining a reverse SSH connection to a VPS.

I currently have pi-hole and Unbound running on my rpi4

One for home assistant, one for very basic network services (dns, auth, dhcp) that I want up all the time even if I have to shut down the router+firewall. If I have to upgrade the firewall box I don't want to be unable to print, or use smart home stuff.

Home Assistant setup, along with media hosting for a hard drive full of all my music and movies.

K3's cluster, Gitlab, Ghost, Nextcloud, Elastic stack, and some other stuff.

One for pihole

I used one in the past for Unify Controller but it broke

Another one is a USB wifi hub to control my telescope equipment remotely.

Yes, a Pi 4 with 2GB RAM. It is running Navidrome (music server) with my music collection on a 2TB SSD connected to it. Works great.

The energy consumption at around 3-4 W, pretty neat!

Using a Pi3b to run AdGuard Home and a TailScale subnet router.

I've got another Pi3b running Octoprint/Klipper for a 3d printer, but I'm currently migrating that to Mainsail running on an old SFF PC so I can run multiple printers with Klipper off the same PC.

The rest of my stack is on an actual server running UnRaid with like 50tb raw storage.

I will say that TailScale has been annoying asf with their subnet router setup not actually forcing the correct DNS for AdGuard Home so I can have ad-blocking while away from home. I had to move back to a pure Wireguard setup directly on my router for DNS to work properly.

All the arrs, HA, pihole and a few smaller containers running on pi4. It was my gateway into the world of self hosting.

I have a 4 meg Pi 4b running Pi-hole and Mini-DLNA. It’s rather under-utilized for those tasks, but it serves them quite well.

I use a Pi4 to run one of my HAproxy nodes. It does die once in a while from not enough power because my power brick is pretty old at this point. Other than that its great. I used to have a cluster of Pi3's bit I'm transitioning cluster managment systems so they aren't doing anything right now. I recently got a Lichee pi and that will most likely replace them once I get it all working.