A simple case with a hook or a hoop to hang your bluetooth xiaomi temp / humidity sensors (LYWSD03MMC).
The hook and hoop are interchangeable and rotate so you can adjust your sensor to the perfect position.
The fit is perfect when printed in PLA and includes a cutout for the sensor vents.
You can print either front or back facing down. The orientation in the default profile includes a small support but gives a better appearance.