Have some loose change and a coworker or two you'd like to annoy? These penny shooting business cards are the thing for you.
The "Penny Shooter" is a standard 2" x 3.5" business card and includes a fold-up magazine that launches up to ten pennies. They may not be very practical, and they probably won't impress Patrick Bateman very much, but at least you'll have something to fend him off with.
The cards were designed by a mechanical engineer from Oklahoma. You can read more about them (and order an $8 "prototype") at Cardnetics.com