I'm not sure if it's my "day job" yet, but I make more money working on pins these days than my "day job".
I used to own a bowling alley, but it was too small for pins. When the economy tanked, so too did the bowling alley - we lost just about everything. Today, I'm always looking for work - and I've done okay fixing pins over the last few years. This year, my wife opened an arcade and I maintain the pins there. Basically, we're going for broke, because we're not making enough money at our other jobs to maintain the house, etc.
The arcade has done okay so far, I'm hoping things pick up more sooner...or things will get ugly fast!