https://www.youtube.com/watch?v=1X9lbCchVNg This project can help you save space in your refrigerator! read the full guide on: https://learn.adafruit.com/magnet-bottle-holder/overview 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 slots where 1/2" diameter sized magnets can snap fit into. The strip is then mounted to the top inside of your refrigerator with double-sided foam tape. Modify and Remix! 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 hold tools or anything made out of metal!