[Error: unknown template 'qotd']Hard to tell, I like fixing things, especially using stuff in ways it was never intended to be used. I cut up old motorcycle tubes to make nice sturdy rubber bands. Stuff like that.
But the first thing that comes to mind is when I was riding a moped that needed its carburettor cleaned on the way, and after I took the lid off the floater chamber, I found that the screws were so bad I would never be able to screw them back in again.
So I found a piece of wire that was lying around (there's usually something or the other that you can use if you just look around for a while) and tied the little chamber shut with that. And hey presto, it worked.

Man, that moped was a piece of crap. But I got home that day.