Have a look at the TechDweeb, Univac has made a circuit bending mod to a Staples easy button. There are samples of the effects on his site also.

Bent Staples Button (listen to more)


“This is a terrible Staples Easy button (”That was easy!”) that I added a 1Meg pot to control pitch way way down until it now sounds really quite interesting, in a grainy, annoying, girl-killer-frequency (you know what I mean…) kind of way.

It was a very simple bend. Removed one resistor (there were only two) and replaced it with the pot. The hard part was fitting it inside the case. I ended up cutting a chunk out of the board that was just ground traces, put in the pot, then jumper wired the ground back together. It all fit nicely after that. And looks good too.”