I have been using the Mini All-in-one Printer Test as color swatches for my filament. I created this to keep them organized.
I wanted something that was simple and did not use too much filament. I also wanted the lines to match the test prints, and remain simple because I wanted the focus to be on the swatches, not the container they are in.
The tray holds 20 test prints.
Credits:
bshiro