The Revolution Door concept from Fluxxlab adds a power harnessing component to a standard revolving door to create energy as people walk through the door and turn the gears. While it is a good idea in theory, if it adds any additional resistance to the door it will make it even more difficult for some people to push the door. In a heavily traffic’ed doorway this could be very useful.
Easy Onion Holder Slicer Vegetable Tools Tomato Cutter Stainless Steel Kitchen Gadgets No More Stinky Hands
New Upgraded Travel Organizer, A Portable Case For Managing Cords, Wires, Electronics Items, Gadgets and Accessories, 12 X 8 Inch (Black)