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.
For years my main hobby was guitar but in the last year I started cross stitching and I am now hopelessly addicted to it lol! I never would have guessed that would be a hobby I’d take up but I saw a pattern I liked and decided to try it once and have been doing it ever since!