I love these filament samples and print them for every new roll I buy. I used to keep them together with a twist tie, but I have too many now. The holder was too complicated and didn't hold enough, so I changed it up. I didn't go fancy, just functional. It holds about 40 samples and I use a rubber band to keep them from falling out. It also prints really quickly, which was the other requirement.

Update:
I forgot that I stretched the dimensions of this when I printed it. In the slicer, I changed the width to 69mm (less than a percent wider). I also stretched the length to 110%. This allowed me to fit quite a few more.

Pyramid A1.1

No

No

0.2mm

15%