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Kinetic Sand is basically a three-dimensional building toy made of 98% sand and 2% polydimethylsiloxane (a type of silicone oil) that mimics the physical properties of wet sand. This material was originally designed for sculpting, but is now commonly sold as indoor play sand. Appearance wise, it resembles light brown sugar, and can be molded. Even though it sticks to itself, the sand won’t adhere most other materials or surfaces, and doesn’t dry out to boot. Continue reading for more oddly satisfying things.