I saw a magnetic sweeper used to pick up ferrous bits and pieces from your shop floor a couple of months ago. I thought this was pretty cool, and then I looked at the price tag and decided it wasn't that cool after all. Shortly after that my shredder crapped out so I ripped it apart and one of the things I was left with was the magnets in the motor housing. I had a bright idea to build my own magnetic shop sweeper, but no motivation until this contest came up. So this is how I built a magnetic shop sweeper out of stuff I had accumulated in my parts collection. I had to buy one part. So the reuse aspect and fact I didn't buy something that had to be transported halfway around the world from where it was made, makes this project green. Plus you can recycle all the little bits you pick up.