Ah, Kazoo, it's not the size of the mess, it's the inaccessibility of the nooks and crannies they get into that makes it so much fun!

I was going to tumble some brass yesterday when I was working on the shotgun, but I can't stand the noise after a while, so I'll just turn it on when I have somewhere else to be. Some of the tumbling is fine, but there are calibers that are a lot louder than others.