Recently, I went out to ThinkGeek.com and bought two of their Annoy-A-Tron gadgets for hiding in unsuspecting co-workers cubicles.

The Annoy-A-Tron is an extremely effective clandestine device for infuriating co-workers, friends, and family alike. Aside from the subtle, yet thoroughly obnoxious noises that this little slip of silicon produces, you also get the enjoyment of participating in a covert-op to install the gadget in the victim’s workspace.