This thread is worthless without pics! Mine is a disaster right now, I want to clean it up sometime though. I normally don't have it this messy, it just kinda got out of hand.
This garage is too small for a car to comfortably fit or be worked on so I don't bother. I want to eventually insulate/seal it, bring more power, and make it a nice climate controlled work area. I already added 3 T8 fixtures a few years back, used to have a single 150w bulb and that's it. I've even had thoughts of eliminating the garage door so I can have a proper insulated/sealed wall. I'd probably put a window or something. The garage door is handy for taking out the lawnmower and stuff though, but I could always build a small shed for that stuff. Converting a garage into a room is probably involved from a political point of view though, could maybe affect taxes and stuff like that, so probably wont actually do that.
Either way, I do want to redo the floor, walls, ceiling and fix it up so I can use it more. It's either too cold or too hot to work in there. I'd make it nicely insulated and put heat and AC.