Eben, given your track record, if you build it, we will come ...
At the Computer History Museum, we have a duplicate of the very first Bell Labs whisker-hair transistor that Shockley, Bardeen, and Brattain built. When I built my first germanium crystal AM radio, I couldn't believe that it could actually receive and amplify radio signals from scores of miles away, even occasionally over 1,000 miles away in the case of WGN in Chicago, which could be heard from the New York metro area late at night when the ions were cooperative (its 50,000 watts at 720 KHz can sometimes even be heard as far away as South America, Europe, and Australia).
As far as I'm concerned, every kid should build these kinds of devices so that they'll better appreciate how magical it is that their cell phones ever complete a call, much less are then able to occasionally drop one!
The best things in life aren't things ... but, a Pi comes pretty darned close!
"Education is not the filling of a pail, but the lighting of a fire." -- W.B. Yeats
In theory, theory & practice are the same - in practice, they aren't!!!