3D Printer Files | 3MF File | Filament Sample Cubes with QR Codes

I visited a shop recently where they had printed models to sample the colours and texture of filaments they were selling. I loved the idea of seeing the colour and feeling the texture of the filament.It made me re-think the printing of swatches but still needed to print something small with lots of information on them.These are 30x30x25 cubes I print with the filament I am sampling. Then after a 'pause and swop', I finish the print with a QR code containing text of the filament's