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.
Mostly video games and programming. I spend a lot of time working on programming side projects. It’s often kinda like playing a puzzle video game.
Yeah it’s the same sort of challenge and satisfaction at a solution, completely agree!