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If you have a kid, you know that a cardboard box is kind of the ultimate toy. The durable, affordable miracle that is corrugated cardboard can be used for a vast variety of purposes, including some surprisingly high-tech ones. In this article, we’ll survey the world of cardboard engineering to showcase ten incredible products made out the material. Cardboard Bike Engineer Izhar Gafni was living in a kibbutz in Israel when he took a challenge to make a bicycle for under ten dollars. Naturally, the material that came to mind was cardboard, and after many months of experimentation he developed a slick-looking ...