All systems: If you’re keen on trying out one of those clever devices from the One Laptop Per Child project, you can get halfway there by running the OLPC’s operating system from a USB drive.
Sugar on a Stick, a thumb-drive-friendly re-build of the Linux-based Sugar OS found on the XO laptops, can be loaded onto a a portable drive from a Windows, Mac, or Linux system. It’s basically creating a portable Fedora system with the OLPC interface layered on top (and, we’d presume, most of Fedora’s own tools stripped out). It’s great for OS voyeurs, or for letting your kids try out the education-focused software behind the OLPC project.
Sugar on a Stick is a free download for Windows, Mac, or Linux systems.