I was looking all over the place for a case that would fit my needs. Slim, narrow, just room for the ESP32 and the Waveshare 2.9 Inch display.

The ESP32 d1mini is with a USB-C plug in this version, so the case is made with that.

I haven't made any mounting holes, as I just use double sided tape to mount it.

In the bottom there is a little access port to the reset switch if reconfiguration is needed, no need to pull it apart, simply reset it through the port.
It's a simple print, I printed mine in PETG, but PLA is just as fine, no supports are needed.

The top plate is NOT symmetrical (due to the cable at the end of the display) so please make sure to orient it properly