I went on a kick designing small parts trays a while back. This one is the smallest and cutest of the bunch. I use these mainly to prepare small rivets, buttons, etc. when working on a leather project, so I can keep the random boxes on my workbench to a minimum.
This model prints in vase mode. That’s really the only requirement, but here’s what I recommend:
The blue one in the photos is an earlier design which did not allow stacking… but why throw away an already printed one? The white one (which is the uploaded model) shows the divider lines not reaching all the way to the top, allowing you to stack these trays on top of one another.
The author marked this model as their own original creation.