Case for little ESP32 board from TTGO named T-Display. You can choose two versions - one has room for a little LIPO battery, the other is narrow.
Info about the board is on the GitHub
You can buy it on Aliexpress.
Board can be used for example as a clock (not my code).
Update 2019.08.06: New source code from kd8bxp: Cheerlights Clock. More info in the comments. Thanks for his code!
TTGO-T-Display-bottom-battery.stl | 39.3KB | |
TTGO-T-Display-bottom.stl | 39.5KB | |
TTGO-T-Display-top.stl | 12.0KB | |
TTGO_T-Display_box_v13.f3d | 926.7KB |