DroidFreak writes: "What do you do when Mylar balloons get stuck on a ceiling 20 feet out of reach? You build a Lego dart gun to get them down of course! This "weapon" has a frame made of Legos; fires darts made of pencils, tape, and Kleenex; and is powered by rubber bands. It can shoot over 100 feet angled and can punch through aluminum cans. Best of all, my blog post includes instructions on how to build this gun so you too can have the power to fell Mylar balloons 20 feet above your head!"