I've been going down the smart home rabbit hole and learned about the ESPresense project that allows you to create beacons in every room of your house that can track your cell phone, Airtags or anything else with Bluetooth and allow Home Assistant to tell you which room that thing is in and at what distance. It's useful for keeping lights based on motion on (ex: turn on the lights when motion is detected, but don't turn them off if people are still in that room)

The project requires an esp32 board which gets power from a micro usb cable and rather than have them dangling from a short cable in all of my outlets around the house I designed this little case with a press fit lid to house them.

• esp32: https://a.co/d/cC63agb
• USB Power adapter: https://a.co/d/8mFd3yw

This uses the bottom half of the esp32 case from bdmihai (https://www.thingiverse.com/thing:3195951) so you can secure the esp32 using the header pins sticking out of the bottom and is built to house this AILKIN dual port USB power adapter linked above.