Okay. Pay attention. This is the transformation of two stellated rhombic dodecahedrons from a cube, according the bloke in the video. I don’t really know what that means, but that might be because I’m blinded by the power of geometry-based-awesomeness.
It’s also known as the Yoshimoto Cube, and you can buy it here. Bit late for a stocking filler, I’m afraid.