There’s about five pounds of salvageable copper inside your typical photocopier (mostly in the power supply and the motor’s copper windings). Copper, that can be mixed with zinc to create brass. Brass, that can be shaped out to make a trumpet. It’s the circle of life!
Compared to electric gadgetry, something like a trumpet is a pretty simple contraption, but the way it actually works is super clever when you see it in action. The principle is very straight-forward, but the construction of the actual pieces that re-route your hot air are damn cool to see at work.
You can play the fiddle, the piano, and plenty of other instruments on your iPhone, so why not the trumpet too?