The ThinkGeek Annoy-A-Tron is an electronic device with a single purpose: to drive someone crazy. It’s a tiny circuit board (smaller than a business card) that generates short beeps at random intervals. The idea is to hide it somewhere near where your victim works (a built-in magnet helps you do this) and watch him or her go nuts trying to figure out where the sound is coming from. The Annoy-A-Tron can run for up to a month on the (included) watch battery — and of course you can sneak in and install a new battery if you want the torture to continue.
It goes without saying that this gadget is evil. But you have to admire the ingenuity of the diabolical genius who designed it. And it only costs $9.99, so it’s an infernal device that even the most cash-strapped villain can afford.