I've been thinking about making a video of what practicing is really like. Not a full 3-hour slog through one of my practice sessions, of course, but a short montage put together over the process of learning a piece, with timestamps and captions that say what issues I'm working on at the time. Then a "finished product" performance at the end.
There are tons of piano performance videos out there especially since the advent of YouTube, but even the ones that say "practice" are pretty much top-to-bottom performances of the piece. Would it be useful for students to see how pianists go through the practicing process? (Would it be reassuring for non-musicians to see that it isn't as easy as it looks in performance?)