Single-part protective housing for the small ESP32-C3 boards you can get all over on AliExpress. The board fits in and stays in place due to the way the flexible housing wall is designed. It's not exactly a snap-fit; it's better! This is rugged, won't break, and will print well on any machine. There is no need for a lid, as these rarely print well. The pins stay protected, and you can connect ~2.5mm cables through the bottom opening.
Includes parametric CadQuery code (written in "SCAD style").
This can be printed with extremely little infill (like 8% lightning), and 8mm shell thickness.
Let me know if something doesn't fit well on your ESP32.