DutchTub, wood fired hot tub. Designed by Floris Schoonderbeek. Who says you need electricity to have a good time? These off the grid innovations can light up, cool down, and even serve you a hot cup of joe - all with absolutely no electricity required. From magnetic fields to photoluminescent materials, tomorrows gadgets promise to take green technology to new levelsand theyre sure to start up some great conversations! Instead of using electricity, this refrigerator is cooled by magnetic fiel