Mini-bombs away! We have shown you USB missile launchers, but if you really want to be subtle, you will need the Catapult Watch. Backyard Artillery claims that it will shoot pebbles, pop corn kernels, spit wads, seeds, and whatever dry legumes you have lying around the house/office up to 8 feet. The company also creates full-size catapults for those who have castles to storm and fair maidens to rescue. Available in black with silver numbers or silver with blue ones, it carries a MSRP of $49.99. BA will toss in a free supply of ammo, just because they like playing with them, too.