"Hey, Mom, can I take apart the piano?"
True question, from Ernest of course.
"Why sure, dear."
This started because the front cover was squeaking. Once he took the front off, he started fiddling with the insides to see if he could fix the wonky key. The one that double taps. He figured out it was missing a felt pad, somehow maneuvered a piece of felt behind the whatchamacallit, glued it on, and voila.
He and another classmate, with their teacher's blessing, are planning to learn how to tune pianos. The music department's minuscule budget will go a lot farther if they don't have to pay someone to tune 6 pianos every year.
I don't know if he fixed the squeak, though.