This is SO COOL. It's a DIY laser-sighted pencil launcher that can kill you or—worse—shoot through a can. All you need is a laser pointer, some rubber bands, some clips, and some other junk. Called the Super Mauly, it can be found on a site dedicated to the construction and testing of office-based projectiles. Imagine shock and awe-ing your boss as he sits down to his sad sack lunch. Wicked.