I think that The Crochet Coral Reef could be one of the coolest things in existence. It follows on from what is probably my favourite scientific paper of all time: Crocheting the hyperbolic plane where Daina Taimiða proves that one can make a mathematically correct model of a hyperbolic plane through the medium of crochet. The reef combines art, math, recycling, environmental awareness, crafting, self generating forms, emergence all of which are things I like. So therefore it is the coolest thing ever. I've decided to make my bit of hyperbolic crochet to donate to the reef.