Another prototype from Promise Design, Phytoslim is a modular system for growing plants on walls. Its slim panels are made of coconut fibers and supported by a hidden plastic skeleton. The 2"-thick pieces supposedly attach to any surface, indoor or out, vertical or horizontal. Although we're absolutely smitten with the idea of a grass-covered interior wall, the sheer logistics leave doubts in our minds: Watering? …

Fat Fridge

The Little Fat Fridge is a fantastic and funky solution for refrigeration in temporary living spaces, small apartments and dormitories. The prototype, designed by Zev Perlmutter for Israel's Promise Design, is made from light, inexpensive materials– PVC and styrofoam- -and runs on an electric cooling system. The highly-portable appliance stands only five feet tall and features six slots for fridge-front photos.