Geometry Nets
thingiverse
These nets include solid hinges so that they can be folded/unfolded over and over (because... kids). I've created nets for a cube, rectangular prism, triangular prism, rectangular pyramid, and triangular pyramid. These have all been printed and vetted.
Download Model from thingiverse
With this file you will be able to print Geometry Nets with your 3D printer. Click on the button and save the file on your computer to work, edit or customize your design. You can also find more 3D designs for printers on Geometry Nets.