This model was designed to house an ESP32 WROOM / Super Mini, with an internal space for a TP4056 charging module and optionally a small LiPo battery.
It includes a cable pass-through for placing a DHT22 sensor in the upper compartment. The design keeps the sensor separated so that ambient humidity does not affect the main electronics, except for the DHT22 itself.

I recommend applying high-temperature black RTV silicone on the cable pass-throughs for outdoor use, or hot glue if the device will be used indoors.

The lid will snap shut, and to open it, the small notches at the bottom will be used. I liked it because it closes tightly and seals really well.

The prototype was made using PLA, but PETG or, even better, ASA is recommended for outdoor use.
This model can be freely used and modified for any purpose, both commercial and personal.