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.
Flying airplanes. It’s a great community and I’ve made life-long friends, gone to some amazing places and seen awesome things. My daughter just got me back into SCUBA diving also because she wanted to get certified.