I folded this model of modular origami from Tomoko Fuse's book Unit Polyhedron Origami. I created this model by combining two regular polyhedra.
Note this message regarding the photo on the right: That model isn't in Fuse's book. That is my model. He used "Bascetta's unit" from Bascetta Star and with joint created by Waralow Kami. Regards, Paolo Bascetta (Italy)