At the core, my Trello system works like this:

• I have a template Trello card for a generic week. This has a checklist for each day with the tasks that I don't do by default (e.g. in my case eating breakfast/lunch/dinner isn't on it because my sense of hunger and thirst works really well!). It's typically things like doing my exercises (which I will often forget if I am busy), checking whether the cat litter tray needs cleaning before bed (at the end of the day I am tired and can miss things that should be done, so this serves as a useful reminder) or regular things that don't happen every day (like watering my indoor plants on Tuesdays and Fridays).
• I also have a Task Pool card where I note down all the things I need/should/want/would like to do. I'm currently working with an OT to help improve how I prioritise and select what to work on (this is where energy accounting comes in if you use it), but the idea so far (which mostly works) is that on Friday evening (when my wife and I discuss the weekend and the following week), I create the next week's card from the weekly template and grab any items I need/want to do that week from the Task Pool.

For more irregular activities, like holidays/trips, I also have a template card. It makes it much easier to prepare for a trip; I have checklists on that template card for:

• Things I need to do before leaving
• Things I need to take that aren't regular packing
• Normal packing list (e.g. clothes, medication, toiletries, etc.)

When I know a trip is coming up, I then create a card from the template specific to that trip and start adding things as I think of them. For example, I might be planning to visit family for a birthday or other event, so "birthday present" would go on the non-regular packing list.