3D printing has been slow to catch on with consumers, but those in the know (read: us) say it will prove to be one of the biggest trends of the decade. New and novel uses for the technology are coming along faster than ever, and some are proving to be life-changing. Once such invention is the Handii, a myoelectric prosthetic hand designed by a team of Japanese engineers, that allows maximum customization at low costs that could make them accessible to most everyone. Most impressively, the 3D-printed hand utilizes a built-in microcomputer that makes it programmable via smartphone. Developments like this are making 3D printing one of the most exciting new trends of our time.