Mount for nightlight with motion sensor (Suright)

This is a mount for some night lights I bought for my mother (made by a company called Suright - but maybe there are other brand names for the similar dimensioned products, 9.2 cm x 5.9 cm oval shape, 1.5cm deep).

They came with some "magnetic" plates and double-sided adhesive tape for installation, that promptly fell off during the first night. Hence this design. In my printed version the lights fit snugly enough that they stay in place without any glue/tape, but it might depend on printer tolerances. The opening left in the sidewall is for accessing the switch at the bottom and the USB charging port on the side.