My wife makes homemade soap. So I created drying racks for her to store the soap while it cures.
There are two files. One will hold six bars, the other will hold ten bars. You print two copies of the second 'interlock' tray to make one drying rack. The length is such that 9 racks (90 bars) will fit on a half sheet pan. Six copies of interlock STL can be printed on Ender 3 size 3D printer at a time to make three 10 bar drying racks.

The Interlock tray can be easily glued together with 3D Gloop.