EX-TER-MIN-ATE your way to fun! ThinkGeek has a great set of remote control Daleks, that would rock in any office style environment. Set these loose around your cubical for wacky hyjinks and hacky wijinks.
They are based off the "Dr. Who and the Daleks" movie so they come in three technicolors, which ship randomly meaning you only have a 1-in-3 chance of getting the colour you want, but the Daleks don't care.
Thinkgeek, Dalek, Remote control, exterminate