This is just a small and simple case for the QuinLED Dig-Uno LED controller. It snugly fits the regular ESP32 Module (PCB antenna) without issues, but it is no larger than it needs to be - the PCB antenna protrudes a few millimeters from the case.
The two halves just snap together, no glue or screws required and can easily be taken apart again.
Easily printable, no supports required, 0.1mm layer height is recommended.
The author hasn't provided the model origin yet.