I've never been a particular fan of filament swatches that need writing on to denote colours, they're admittedly more universal but to my eyes not particularly smart.
Accordingly, and being a fan of 3DQF's filament* I've sketched up a complete set of filament swatches for their PLA filaments. This was at least partially an exercise in getting me back practicing 3D modelling but hopefully it's useful to someone else.
These are by design quick and easy to print, and don't take up too much material. The next step will be for me to design a little holder rack for them and perhaps I'll do another brand I use.
* https://www.3dqf.co.uk/ I've found their filament to print consistently well and it's priced reasonably. It's great to have a UK filament manufacturer (not just a reseller/rebadger of imported stuff) and they supply on cardboard reels which dramatically cuts down on cardboard waste. Give a reel a go!
The author marked this model as their own original creation.