Same technique as my paper brochure folding things, but done with a different material. While cleaning out my late MIL's house, I found a couple of unused photo wallets, with plastic sleeves. They have practically been mid-air to the rubbish bin, when my mind formed an idea,... and here I am, with the result. I combined three of those mini booklets and foldet them. I like how the plastic transported the light, unfortunately I lost some details upon upload. (I tag it mw-paper as well, to have it together with the other ones.)
