I used the scad file from https://www.thingiverse.com/thing:189264 to create four 60x40 boxes with sliding lids. These are glued to a base I made in Fusion. The included base is for four boxes, but as I get older, I anticipate needing more boxes on the base. A Fusion file is included for the base with a quantity parameter that allows you to specify how many boxes there are.
This base only works for a 60mmx40mm box generated with the scad file. You can specify how tall you want the box in the scad parameters. The lids are a little snug, so you may have to shave the edges a little bit. I configured the lids with text added in Bambu Slicer and printed on an X1C.