Hobbies of yours...

I decided a while ago that it would be good to have a hobby. But, I can't figure out what to take up as a hobby. I would like it to be something that is easy, cheap, fun, productive (useful), can be done on the couch while watching T.V., Lua won't destroy it, I am good at it, and maybe Micah would want to do it too. Anybody have any ideas? I'm trying not to be too picky :)

What do you do with your "spare" time?