We have been at home doing puzzles all month so I wanted to have some sorting trays that could be stacked up and put away without loosing any pieces. I decided against designing a top because another tray can be printed and ultimately that is more useful than a top.

Print in different colors and figure out how many you need. The tapered interior was made to be able to slide out pieces easier

stacking_tray_max_prusa.stl is this tray made as large as the Prusa MK3/S print bed allows. If you have a request to max out for another printer bed let me know because I have built this model parametrically so it is very easy to add.