Print the trays in either Spiral Vase Mode with External Perimeters of around 0.75 mm or with zero Top Layers and zero % Infill with the number of Perimeters that give the wall thickness you want.
The default settings work with lids from https://www.thingiverse.com/thing:5378448 or https://www.printables.com/model/196498-square-lipped-tray
Category: Organization
The author marked this model as their own original creation. Imported from Thingiverse.