The wall mount for the Xiaomi Mijia 3 Hygrometer Thermometer (model MJWSD05MMC) features a space for double-sided tape with a width of less than 35 mm to attach to a wall.
I printed it using PLA Matte, but any filament will likely work.
A similar design of wall holder is available for Xiaomi Mijia 2.
The author marked this model as their own original creation.