10. Ludwick Marishane Age: 27
Ludwick Marishane invented DryBath and is the founder of Headboy Industries. According to Forbes, he was in high school when he came up with DryBath, a gel that does all the work of a bath without water.
In 2011, Ludwick won USD 10,000 in cash, and more in in-kind prizes. He’s using the funds to finance my global marketing endeavor to secure contracts with armies, airlines (to put DryBath on long-distance flights), hotel groups (to save water), and to other travel industry services.