A box designed for the Homebrew Gen. 3 accessory for Celestron mounts. See here for details:
https://www.cloudynights.com/topic/854327-homebrew-gen3-pcb-wifibtgpsmusbrelay/
I printed it in PETG. No screws needed, apart from #4 M2x8 to attach the OLED screen.
My OLED screen is a 0.96" SSD 1306 128x64, adjust it to the right size of your screen, or delete the hole if you don't want an OLED.
The author marked this model as their own original creation.