Personally: Hiking, biking, photography, DnD, and fixing things.
It sounds like a lot (because it is lol) but with ADHD having a group of hobbies I can orbit around (especially if they can overlap (like these ones))can help me avoid diving into too many new hobbies.
I start a lot of knit and crochet things but never finish anything. Excitedly start something, work on it diligently for the first half, begin to hate it, rip it, decide it was the yarn that i hated, buy more yarn, start over on another project. How do you avoid that cycle?
I think we all do that a bit, tbh. But when I get to the “rip it” stage I just put it in a timeout box instead, work on a new thing, then usually the desire to get back to the original thing will return eventually! If it really doesn’t I’ll also frog but that’s relatively rare.
Bonus of having so many craft hobbies I guess, there’s always some other WIP to switch focus to!