Disney makes some really cool and creative products! Check out this video of some new mechanical assembly design software. Usually designers have to solve time-consuming and complicated geometry and trigonometry problems to get these assemblies to work, but Disney created a way for laymen to do it simply by drawing the desired movement path.
This has astounding implications for 3D printing due to the fact that many machines can make complex assemblies in a single piece. Merging the two technologies makes automating toys and models fun and simple. Every model in the assembly could have been or was made on a 3D Printer.