I always found rubber bands to be very musical. I liked to sting a bunch of them together, hook one end over a chair arm and then pluck it like a stand up bass guitar. When I was a kid a friend of mine had a paper route. When he quit he still had a box of tiny green rubber bands left over. We spent a couple hours linking them all together and went out into the parking lot of his apartment building. We walked in opposite directions to see how far it would stretch. The chain finally broke and shot across the parking lot knocking him over. I ran over to see if he was ok, and found him laughing beneath a tangled pile of green.