Heres what my lil controller for upcoming circuit bending projects looks like. Gotta love reusing old PC power supplies, they rule for little project boxes.
It has 2 rows of just normal old throw switches and two Potentiometers that run down into some old parallel ports that I ripped off some old computers. This way you can take an old printer cable, hack it in half, and solder the loose ends into what ever electronic device you want to break bend. So now its just a matter of ripping something open and playing with the wacky sounds.