Brake drums, usually found on cars, can also be a percussive instrument used in orchestras.
As I'm telling this story to Mark he immediately chimes in that we could find plenty of brake drums at the truck yard just outside town. One day later, I have 7 brake drums, costing me $5 total, each weighing about 20 pounds.
What am I going to do with 7 break drums? Record them of course! I just got a spiffy new Zoom H2 handheld recorder for Christmas and am testing it out. Results below hitting the break drums with a hammer. I want to try a rubber mallet next.