Apart from wanting to do something unique, the reason why we decided to integrate magnets into our design is to enable modularity while also encouraging people to orient two or more tray in unique shapes. The magnet wells were intentionally designed to provide strong magnetic attraction through the aluminum walls of the tray. The last reason is that this is the first in a series of trays in different shapes/sizes that will still work with previous versions of the tray so they don’t feel like separate entities to accommodate your growing collection.