DIY Hardware shredder…?

MAKE reader Matthew writes “I woud like to suggest a make project to design and build a hard drive/electronics shredder, not one to shred software but something to shred actual metal hard drives, they have commercial versions. The end product can be recylced.” Awhile back there was a round up on G4’s Destroy All Data and I’ve also seen this company and their crazy couch shredding, computer devouring videos, as far as DIY solutions – how about a hard drive clock? Post suggestions in the comments!