One Laptop per Child is a neat, durable laptop built with the goal of getting as many children in third world countries learning how to use computers. The last couple years they have run a program called Give one, get one where the only way to buy one was to pay the double the price and buy two, one of which (or the cost, etc) was automatically donated to the mission of the project – getting laptops into the hands of children.
Portfolio recently pointed me to the blog for Laptop Magazine, which has been tracking the deployment of 30 OLPCs in Ouéléssébougou, Mali. Good stuff.