The Computer Repairman
My school had a lot of computers, but no one to fix them. Whenever a computer broke down, whether it blue-screened, caught a virus, or was stuffed with cheese(Yes, that actually happened), I would fix it up. I only fixed them because I wanted to, but I also got the added benefit of teachers being lenient toward me. In one year I managed to get the admin password to all computers by asking the librarian, get a usb mouse from one of my teachers, get a free copy of Photoshop Elements, and even skip the whole 4th quarter of English with an A.
I basically got paid without ever meaning to.