You have probably already heard of the One Laptop Per Child Project, which aims to equip children in developing nations with low cost laptops to aid their education. The XO-1 is the first machine to be made by this project, and is very innovative in both hardware and software design. Getting your hands on one of these machines is quite difficult, especially if you don't live in North America, but what you can do is get hold of an image of the machine's operating system and run it inside a virtual machine.