I made this for my mom's birthday. It displays low-res pictures that I can update over the internet.
I figured out that you can melt PLA with a soldering iron on low heat, which I used to affix the circuitry to the base.
Raspberry pi zero w
Henner Zeller's rpi-rgb-led-matrix library: https://github.com/hzeller/rpi-rgb-led-matrix/
My simple Bash script and 3d model can be found on github: https://github.com/dylanrush/himom