I need to find something constructive to do!!

Really, I do! Since I'm on temporary total disability, I have lots of time on my hands. The problem here is that I don't have the resources to go out and do fun stuff all the time, and since it's my spine that's jacked up, I can't do the things that I have historically enjoyed doing, skateboarding, surfing, mountain biking, etc. etc. So I need to find an outlet for all this bundled up energy. Any suggestions?