Encouraged by the good folks at Businessweek, our favorite master slingshot builder Joerg Sprave put together this latest video showing how to weaponize everyday office supplies. Because no one's going to steal your lunch from the break room fridge when you're packing heat.

Using mundane supplies you can easily requisition from your office manager, Joerg builds everything from an elastic-powered pencil launching cannon, to yet another dangerous-looking slingshot from scissors, tape, a USB cable, and extra-large elastics. There's even a quick how-to on building a close combat flail, for when office warfare degrades into hand-to-hand combat. [YouTube]