I started off trying to get enough strength to consistently draw a bow almost twice as heavy the one I had been using, since archery's only twice a week. I'll probably keep it up even after I stop archery, though, since I like being strong (very generally useful). It's also quantifiable, takes more muscle memory than hand-eye coordination, and (since I'm not doing anything dangerously heavy) doesn't take anyone else being there. So yeah. Fun. Most concrete goal right now is to be able to do multiple pullups by graduation--I haven't been able to do those since early high school.