The plastic-panning contraption is called the Nurdler, and it uses a hand-powered water pump to sort plastic bits by size. After sorting, the machine contains about one-fourth organic material, like seaweed and driftwood. This material can be compressed into small briquettes that can be burned to melt the plastic. The team used this system to build its first prototype item, the Sea Chair above, which was displayed at the Furniture Fair in Milan this year. The tag shows the geographical coordinates of the plastic, and a chair production number.