This, my friends, is one of the craziest/coolest things I've seen in a very long time. The delicate rose pictured above looks like it's made of porcelain, right? Of course it's NOT porcelain. Can you guess what it IS made of?
If you guessed melted plastic spoons, you'd be correct! Not sure about off-gassing here, but it is crazy/cool. To see how to make one, head on over to Can't Stop Making Things.