Where's my away team at? Starfleet Command has discovered a planet full of vicious balloons, and Jay "Scotty" Rob has modified the classic phaser pistol from The Original Series to be able to pop 'em left and right.
Check it all out in the video above. It looks fairly harmless as he pans the beam across the room, though the balloons probably don't think so. Well, harmless unless you go and do something silly, like aim it at your eye. (Here's a spoiler for you: don't do it.)
You can also check out Jayrob's DIY guide on how to go about building your own, here.