A snake trapped in one dimension.
It's always there, but you'll need a strip of ws2812b LEDs to see and interact with it.
Here, you'll find two species: The python, for which you'll need a computer and a fadecandy and the tiny, for which you can use the standalone hardware.
The software in this repository is licensed under the GPLv3 and the hardware under the CERN-OHL-S v2.