Stopper that prevents a washer from moving further.

This is meant as a non permanent solution.
If a washer moves while spinning this will prevent it from moving further.
Use two if your washer also moves to the side, otherwise place it in front.
The device should be placed on the front edge of the washing machine in the first third of the direction in which the washing machine is moving. ( see picture )

The bottom squares are meant to be glued to the ground e.g. using duck tape.

CC0 ( text me if you use / sell it )