a cool way to reuse

the other night i went to a pub where they serve peanuts in the shells. when one of the waitresses commented on our use of an empty glass as a shell-holder, she let us know that we were allowed, even encouraged to throw the peanut shells on the floor. my friends and i were a little surprised that they wanted a mess, but the waitress said the oils from the peanut shells are good for the wooden floors. i just thought that was a cool way of reusing something most people would throw away.