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 make music - mostly black metal, I play a lot of Blood on the Clocktower, and I’m a software developer who likes contributing to open source outside of work.