I caught a concert this weekend with N. Scott Robinson. During the show he was stomping on some awesome sounding, bass-drum like little black thingy. After the show, I went up and asked him what it was that he was playing and he showed me the Puck'n Stompa by Peter Sesselmann.
It's a great idea. It uses a real hockey puck, and plugs right into your bass or guitar amp.
Here's the link: http://www.peterman.com.au/music/stomp.php
And a video: