In Grade 12 physics, I built a Tesla Coil Generator with a partner. I can't remember how many hours it took, but is was at least 50-60 hours. While a lot of the work is really mundane, the final result is something to see. We has about 12-15" of spark, and had it doing all sorts of things a Grade 12 student wouldn't think possible: lighting florescent tubes, passing through 30 bodies and not hurting anyone, exploding a stripe of caps for a toy gun, the list goes on..
The project will teach your students about high frequency electricity, and induction.
I like the fact that the license Slimdevices/Logitech uses for the Squeezebox products is slightly more restrictive. I like the fact that for my personal use, the software is open source, and I can play around with it to my hearts content. I also like the fact that other corporate entities cannot exploit the code with out Logitech permission. I love open source software, but I can also understand the need to prevent other corporate entities from competing with you by directly copying your work. I am a very happy Slimdevices customer with a Classic, and a duet. I was not a happy Roku customer when I tested their digital Music Player that was powered by the Slimserver software. The Roku was more money for what felt like a cheap knock-off.
The difficult we do today; the impossible takes a little longer.