My non-scientific research (talking to the register folks at a few supermarkets) suggests that Coinstar (CSTR) is stock to watch. Makes perfect sense - in a downturn people are going to look to convert anything to cash - that's why pawn shops do well. So of course folks are going to be a little more motivated to take that rainy day jar of change and turn it into spendable dollars.
And you can take that to the bank! (sorry, felt the need to end this post a la local news anchor)