promised it and here it is, the difference is the color change of the cube enclosed a diagram of the module Once you have removed the color remains the same as in the original (see article above). The modules close a little worse because it will collect paper and have it open.
Jose Angel also brought the "cube puzzle" made with a single piece of 2x1 and although it is quite good, there are a couple of faces that do not close at all, so to find the right paper or other close variation there is no better picture.