Here's a demonstration of how to use it as a simple web server. It won't be particularly practical but that's not the point. It enables kids to learn some useful skills and actually do something.
You can even make an Airplay receiver but I can't afford to fight Apple's lawyers so look it up yourself. Hook them up to other high tech stuff that is rapidly becoming cheaper such as miniature video cameras, GPS, 3D printers and motion sensing game controllers- the surface has barely been scratched. Private Schools have spotted the advantages enjoyed by pupils who can actually program and are ordering them at five times the rate of the State Sector.
This really is pioneering stuff and hopefully the next Steve Wozniak is furtively connecting dozens of them together in order to make a supercomputer in the back of a classroom near you.
Oh hang on I forgot- none of this is on the syllabus.