This was inspired by the great work of @Mark'sMakerSpace and this 2x1 gridfinity model for his Filament Swatch System and filament tracking site. (Original filament swatch model by 喵喵mya)
 

Update Oct 2025 - Added a new print profile “0.2mm layer, 2 walls, 15% infill 2 colour 7U taller” for those that want to be able to stack these where they do not contact the filament swatches.

Update June 2025 - Print profile added with PETG label (printed in PLA)

This is a swatch holder that holds 35 swatches in a 2x3 Gridfinity layout. You can now stack them on top of each other. In order not to waste too much height the upper holder does contact the swatches. There is now a 7U high print profile for those that would prefer it not to contact.

Note 1: If you print with both colours the same, the labels disappear. 

Note 2: If there is enough interest I can do others for “PLA Matte”, other?

Prints without supports.

Also see this model for a spool swatch holder: