The honeycomb vase, by Studio Libertiny, is an amazing concept of alternative prototyping. It looks good enough to be a final product for me. Someone please throw some LEDs inside that thing, I think it would be a fantastic lamp. Or maybe a more chemically inclined person could duplicate firefly bioluminescence in there!
Studio Libertiny has some amazing projects with paper on their site too. A paper vase that has the properties of wood! And a paper table that they describe as feeling like "erotic suede." Check out all of their projects, quite inspiring.