Shared by Rob
I used to make stuff like this when I was a kid. Cardboard polygons and origami. Oh I was a weird kid!

>From the MAKE Flickr pool
Fdecomite created this paper puzzle using tips from George Hart's 'slide together' instructions - looks to be quite a simple and fun project.
URL: http://blog.makezine.com/archive/2009/06/playing_card_polyhedron.html?CMP=OTC-0D6B48984890