So this is now the prototype...
This is a modular model: Origami Icosahedron made out of 27 sonoba units (last 3 units to 30 are not added, so there is a hole that we need if we want to use it as lamp shade). Model does not need any glue, since sonoba units lock one another.
I like it. I will make different sizes in final white paper in a few days, weeks...