This Modular Cube is a Paolo Bascetta's creation. It's a very easy and fun to fold modular.
The cube consists of eight corner units and twelve joint units, that I folded with 3" (75 mm) squares of origami paper. I used white origami paper for the corner units, and double-sided origami paper for the joint units.
The instructions can be found in the book, Origami, by Paolo Basceta, ISBN 9788873870258 (in italian).