So ya. remember when I said I was done with the sonobe modules? Ya, I lied. this is the soma cube, and is a great little puzzle. I've seen every variation of colours for it, but I prefer using 7 differant colours (black and white are also cool if you get a pattern going right). Fun to build, and tutorials abound online.
Made with 122 sonobe modules.
Found in "The New Origami" by Steve and Megumi Biddle