Got An Old Printer? Need A New Shredder?

Okay, here's one of the weirder do-it-yourself projects I've come across: How to turn your old laser printer into a paper shredder. It's a lot of tweaking with hardware, and it's a lot of trouble for something that can be bought for about $40, but if you like playing with electronics in your spare time, this is something you may want to try. (Just don't do it with a printer you plan to print with anytime in the future.)

Tom's Hardware Guide PCs & HowTo: Turning Your Printer Into A Paper Shredder (On Purpose) - Overview