I love keypad-based stuff. When my 1st daughter was born I wanted to make a "jukebox" equivalent to the tape player I had growing up in the 80s. I originally envisioned a bunch of plastic cards with QR codes or NFCs, where each card was a song or a playlist, but eventually settled on the much simpler solution of speaker-RPi-numkey pad, with no display: https://github.com/dmd/nkplay

The drawback is that at 10 years old, she knows lots of songs and artists as "number 84" or "number 328" and has no idea that their actual name is.