This is a simple print to hide/protect the Raspberry Pi Zero (or the Einsy Board if you have removed the RPi like I did).
I copied the style from the original cover and printed it in black PLA on a textured sheet to make it blend in with the other parts.
The original design of the cover is not mine, I simply changed its style, the original design might provide better cooling for the Raspberry, so choose carefully.
Link to the original model:
https://www.prusaprinters.org/prints/29060-mk3s-raspberry-pi-zero-w-cover
The author remixed this model.