A simple modular origami that is easy to fold, but somehow very difficult to assemble. It takes about half an hour and a lot of frustration to make it.
The problem with it is that the modules do not interlock between themselves so they’ll come apart as easily as you put them together, but once you manage to fully assemble it it’ll hold in place.
Paper to use
You’ll need 12 square papers for this one.
You’ll find the diagrams in Lewis Simon’s Modular Origami Polyhedra.