It's a very cute box, and I particularly enjoy that this small blog reflects a microcosm of development, fixing bugs for a product, and making it usable for a "customer". That said, games for the author's child remind me of the MIDI Fighter 64 as used by Shawn Wasabi [0], which while a MIDI controller, has reactive patterns to button-presses while being used to play music.
[0] - https://www.youtube.com/watch?v=xof7PkoggbM