Seems like you have a good idea of what to do with your money (pay off student loans, save for a car and eventually property) - you're asking what to do with your time. So many possibilities - start a side business (bike repair/fix-up-and-sell?), join or start a(nother) band, take classes/lessons by barter (drumming or bike repair lessons for...whatever the other person can do lessons), volunteer at some charity you like...
Its funny you say this because I:
Install and clean flooring on the side with my brother's flooring company every couple of weekends.
I also have been renovating houses for over a decade and always take on projects from time to time.
I also have been helping a friend of mine with his custom drum company building drums.
One of my roommates and I have 10-15 bikes in my garage which we all ready do fix up and sell.
I play drums 3-5 days a week, so I get my fill there at least.
And I'm only 26. I used to manage my mother's estate for a few years. I used to have a few nice cars but hit a situation where it brought me back to square one (hence the attorney reference)
I guess I'm just an insatiable daydreamer?