3D printer. Of course, if you're of the particularly crafty, Make Magazine-subscribing sort, you've probably already built a few of your own. For those who don't know a soldering iron from a freshly-burned hole in their hand, however, it's been a matter of waiting for the technology to come down in size and price. A machine designed by professors at the Vienna University of Technology still has a ways to go on the roughly €1,200 (about $1,700) price, but it weigh in at a bit over three pounds, and that's not for your run-of-the-mill extruder -- this breadbox-sized machine uses lasers to harden plastics, allegedly with enough precision to produce medical parts. Looks like picking out the perfect gift for your professor friends in Vienna just got a lot harder.