Magic sand is ordinary beach sand coated with tiny particles of pure silica, then exposing them to vapors of a silicon compound called trimethylhydroxysilane. The result is a hydrophobic or water-hating sand: when exposed to water, the sand would "stick" to each other rather than to the water, and therefore remain dry.
Tokyoflash Treasure Hunt - Win a Tokyoflash Watch of Your Choice!
Going on right now: Tokyoflash Treasure Hunt #26. Win a Tokyoflash watch and neat stuff from the NeatoShop. It's fun and easy to play: Link