Puff&Flock designed a really fun shower curtain that helps people try and control how much hot water they use in the shower. The "spikes" start out deflated at the beginning of the shower. As the hot steam builds up, the "spikes" inflate--telling you that it's time to get out because you've been using a lot of hot water. I think it's a pretty cool way to help conserve water and energy, not to mention "my shower curtain is a green warrior" is a pretty awesome name! This was one of my favorites at the show.
(images by: vivien chin) (image from: Puff&Flock)