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.
Knitting, rowing, beekeeping, walking, photography, computers (tinkering, running websites for other people), reading. Sometimes I get overwhelmed with activities, and lately I’ve not done as much photography as I’d like. But I really enjoy everything I do - I have a great bunch of friends with overlapping interests.