When I first got mine I used it to watch concrete cure (just as exiting as watching paint dry LOL).
Now it is monitoring my EScooter. The scooter has a smart plug with energy metering, so the camera overlay changes between "Unplugged", "Off", "<wattage>W".
The Dahua API is used to get max/average temperature within the box around the escooter and charger. The smart plug turns off when things get too warm and a siren sounds inside my house.
API is also used to change the 'custom title' for charger status.