The other day I bought a digital thermometer to help me figure out and regulate room temperatures.
Unfortunately, it is meant to be mounted on a wall with a screw.
Since I am a tenant I don't want to drill too many holes.
When I opened the battery compartment I noticed that it is rather large, which lead me to the idea of using a magnet.
I glued a disc magnet S-15-03-N
with a strong adhesive into the lid of the battery compartment.