In my 5th semester of Music Theory, one day our professor told us to begin making music with whatever tools we had. The class was slow to respond. A couple people started tapping pencils on their desks. One guy grabbed the trash can and started bongo'ing on it... someone got on the board and reluctantly started scraping chalk... Several folks were just taking it all in with wonderment. Then the professor went to the blackboard and wrote "Everyone must participate!" Then, some people started raising their desks 2" off the floor and dropping them back down...one guy started opening and closing the venetian blinds. Several people started clicking their fingers while others clapped. Me and another guy had a rehearsal to go to so we departed the room - and on the way out we added to the music by slamming the door so hard that it blew ceiling tiles loose and jammed the door. That was the last time we did that exercise. But it was musical!