There are some disadvantages to the CreoPop pen, though. As 3D printers become more and more popular, the strands of meltable plastic they use as a source material becomes easier to find, and cheaper to buy. The CreoPop instead uses its own proprietary cartridges that cost around two to three bucks each and can produce a 46-foot line of hardened plastic. So like with an inkjet printer, you're stuck buying the company's own refills.

On the flip side, just like with inkjet printers, that means the CreoPop pen hardware will sell for a relatively cheap $89. Or, more specifically, will require an $89 pledge since the handheld 3D printer is starting life on the crowdfunding site Indiegogo. So there's a chance it may never actually see the light of day if it doesn't meet its funding goals. But as these devices are becoming more and more popular, the chance to buy one that's easier and safer to use will be hard for hobbyists to pass up. [CreoPop via Cnet]