What to do with this motor (brushless, polygonal)?

I've ripped out a motor from my old laser printer, and got it to work. Any project ideas? This thing is meant for reflecting a laser, but it spins ridiculously fast and is rather quiet, so it should have some applications (novelty ideas welcome too)!

This is the one: http://zapterra.com/systems/2013/07/24/controlling-a-3-phase-brushless-polygonal-mirror-motor/

The less fun alternative is to sell the thing if it's not very useful - they do fetch quite a price on eBay!