This is a case for an ESP32 board that has 4 relays on it. The case was printed in PLA and it holds up nicely so far. It also has openings for cables to come out of it as seen in the photos:

It also features a 4 clip design that is very secure once it clicks into place:

There are slots on both sides of the finished product so you can insert and twist a flathead screwdriver in order to easily separate the 2 parts:

The spacers are there because at the time of making it I did not have 10 mm M4 screws, only 20mm ones. Improvise, adapt, overcome, right?

Please take note of the positioning features on the bottom of the case and also the M4 heat set threaded inserts.