Remember Tinker Toys? What about Legos or K’Nex? Imagine being able to put them together using small adapter pieces. The Free Universal Construction Kit (Yeah, no acronym for this one. Work that out in your brain for a second.), is a set of eighty adaptor blocks, which you can use to do what rubber bands and Bubblicious did when you were a kid. If you have a 3d printer, you can start now!
One potential pitfall to this whole system is that most 3D printers don’t quite have the resolution required to perfectly duplicate the precision with which pieces like Legos snap together. Lego bricks interact with each other so smoothly thanks to manufacturing tolerances on the order of 10 microns, while most affordable personal 3D printers (like Makerbots) have an X-Y resolution of about 100 microns and a layer thickness almost four times worse than that.
If you can’t afford a 3d printer, feel free to drool over the video below instead. Hopefully, all of the companies can agree that this is super necessary for child brain development and allow a third-party manufacturer to put them on shelves.