This large image of an african drum is available as both png and a SVG (Scalable vector Graphic).
Here's a beautifully drawn image of a large Japanese drum or a taiko.
A pair of Tabla drums (they're also pretty similar to bongos) from India.
A large image of a bright blue drum kit complete with cymbals.
Small clipart of a red drumkit.
This small but fun animation shows a monster marching (or maybe just dancing) to the beat of his own drum!
A smaller drum, looks like it could be the type used in marching bands. A snare drum maybe?
Another monster, this one beating out a rhythm on a set of skulls :)