I do as much as I can with my now limited tool supply (I had a bunch of my bike appropriate tools stolen and don't have the $ to replace).
I try to pick up "junk" bikes, repair/tune and actually try to make $5. Not much luck so far. (anybody need a RoadMaster?)
I'll adjust/change ders, brakes, flats and do MINOR truing.
In the indeterminate future, I'm going to try a salvage project on a couple CHEAP rear wheels. 1 has a garbaged hub & straight rim and the other has the opposite. I think it may be good, cheap practice to see if I have any knack for wheelbuilding.