This project can help you save space in your refrigerator! A 3D printed strip holds a series of rare earth magnets that are strong enough to hold different types of containers.
The 3D printed strip features three groves where 1/2" diameter sized magnents can snap fit into. The strip is then mounted to the top inside of your refrigerator with double-sided foam tape.
The strip has three spots for a set of four magnets, which can hold up to three different containers - But you can tweak the design to make it longer!