ペパクラ (Pepakura) is a japanese art and craft of paper in volume
This blog author asked me if there is a mean to do such a thing with Inkscape, I really loved this entry:
animated gears heart (video)
Other:
* PepakuraDB
* Pepakura search engine
* mechanical paper model
* H-Imagine studio, pop-up cards
* Hiroko, pop-up cards
* guru2.karakasa.com
* french forum, Amiga maquette.
* chinese forum
* traditional chinese site, including an ocean animals book.