Love it! I did a similar thing, 64x64 pixels with a LED diffuser. Everything is packed up in the IKEA picture frame: https://imgur.com/a/cLXGWWd

I'm lazy, but I plan to do the full write up and to open source everything. I use it to display pixel art, and during the night it automatically switches to the clock mode.

I love yours as well and it would be great if you can put the code on GitHub. Mine is using ESP32 as well (Adafruit's MatrixPortal M4). It is running Circuit Python though. I love it dearly and I played with an idea of making it as a product.