This is a beautifully filmed short about the "Sea Chair".
London-based Studio Swine teamed up with local fishermen to collect plastic debris that gets hauled in with the crew's fishing nets. While they fish, the crew members melt down the plastic in a DIY furnace and then slowly construct a stool, or "sea chair," out of the recycled plastic.
So brilliant. I want one.
Studio Swine, even offers their own tutorial for you to make one of your own.