I found this web page
http://www.coachdepot.com/shop/?cat=whistledepot
which has some interesting variations. I especially like the purple one, and the camo whistle. Maybe they use that in Iraq? Or is it supposed to be disguised if it falls on a staudard wood basketball floor?
And I'm kinda curious about the "Micro". I suppose it goes on a lanyard? Otherwise, I'm afraid I'd swallow it! Has anyone tried it?