Shai Goitein started with a powered paper airplane, the PowerUp 1, which was pretty cool. But he didn't stop there. The PowerUp 3 is a powered paper airplane you control with your smartphone. He calls this "a mixture of origami and technology." He also says it's a great toy, class project or whatever for the younger set, since kids start making paper airplanes at the age of six or seven. Adults? Why not? This is obviously a suitable toy for anyone with a two-digit (or three-digit) age number. And PowerUp 3.0 is a Kickstarter-funded project, with (at this writing) $928,091 pledged -- against a $50,000 goal, with another 15 days of Kickstarter funding left to go. There's also a smartphone-controlled PowerUp paper boat kit. Unlike the PowerUp airplane kits, it's not sold out (at this writing). Yet.