These Window Curtains Use Sand When you see it you will ask yourself why you didn’t invent it and why was this not commercialized before. Facebook Prev Article Next Article Inventions Checkout these cool gadgets... Related Posts World’s Lightest and Thinnest Electronic Circuit Rochester Invisibility Cloak Can Hide Three-Dimensional Objects Across a Wide Range of Angles Imprint Bicycle Grips Designed to Take The Shape of Your Hand 4-D Printing – Self-Assembled Design Super-efficient floating solar plant Interactive Pizza Ordering Table