Instructions:

There are 5 objects that make up this model. White, Black, Grey and Red for the pattern, and then a back piece that you can print with any color you want. There are some tiny gaps on layer 1 that go unfilled. I don't know how to force the slicer to print those gaps, so if anyone knows how, let me know!

This is a simplified version of the classic VW Golf tartan pattern that they use on the seats. I tried to make the pattern simple, because I don't think tinkercad can handle the model being as complicated as it should be.

If you download the .stl files and slice on your own, make sure you check the box that says 'detect thin walls' or else the pattern will not print right. For the swatch, you have to set elephant foot compensation to 0 in order for the white lines on layer 1 to print.

Here is my collection of filament swatches: https://makerworld.com/en/u/4256451819/collections/130890