Case for ESP32 board with external BT/wifi antenna I used as BT proxy from home assistant.
Board I used is AZ-Delivery ESP-32 Dev Kit C V4. I re-purposed an ipad usb-c charger and micro usb cable. I'm sure there is a nicer and less bulkier solution but this is what had in hand.
Case lid with home assistant logo was a remix of https://www.thingiverse.com/thing:4771598
Case was a remix of: https://www.printables.com/model/223442-esp32-minimalistic-case
The author remixed this model.