Many of the world's preventable diseases could be curtailed by proper hand washing with soap. Clean the World is a nonprofit organization working with the hotel industry to collect used soap from hotel rooms. The charity boils and sanitizes the soaps, then forms it into new bars and distributes them all over the world. While the organization works primarily with hotels, it will gladly accept bars of soap from individuals, too. So if you've hoarded a whole collection of soaps, send them to Clean the World, 400A Pittman St., Orlando, FL 32801.