Big fan of this solution for Ikea Alex and organizing my collection! Still at the beginning of printing everything out, but I've started playing around with making modifications to save on filament for the trays. I made a model with honeycomb walls and then realized that with my smaller collection the depth of many of the inserts would be wasted space for my needs. Which led me to making half height, stackable inserts and adding a grid bottom to the trays.

came out perfect using Bambu basic PLA and no supports. 6x3 magnets fit snugly and so far are holding solid without needing any adhesives.