This is a case I designed for [1], which I flashed with ESPHome to control the water pumps that irrigate the plants in my balcony. It provides 4 holes for 12-volt round connectors (to control the pumps and the balcony light) and another one for an input, connected to a water level sensor.
[1] https://www.aliexpress.com/item/1005001501100301.
The author marked this model as their own original creation.