Fish Door Stop with Magnet

I just added a hole on the bottom for a 10mm diameter, 3mm thick magnet. No particular reason for that size, except I had a pile of those magnets on my desk. Just shove the magnet into the hole. It might require a little bending and stretching of the TPU during the insertion process. Once in, it is well retained and lets you slap the doorstop onto you metal door.