You know those supermagnets inside a hard drive? I found a really good use for them-- Took one and bolted it to a fog light that I bought at a yard sale for $5 (cant have too many fog lights lol) and bolted the bracket to a pair of supermagnets. Wired it all up on 20 feet of wire and alligator clips so it can easily be clipped to my truck battery. Now I can stick it to the underside of my hood, frame, or wherever if I have to perform roadside maintenance in the dark. Gives you a LOT of light to work by, I went out and tried it. its hard to pull back off on that large of a piece of steel lol. I can see it being usefull