Anything that requires creativity such as leather craft, drawing, clay, music, graphic art, and wood working to name a few. I'm not a master in any one of these, but I get buy. And I have fun. And I like Harley Davidson motorcycles.
I'm always open to suggestions, pointers, criticism, etc. Don't worry about hurting my feelings; that would take some effort. If you have something to share I'll always be grateful to hear it.