As a quick project, I made a vegan/vegetarian logo keychain. It prints very quickly and uses the M600 gcode command to add a color change for a nice visual effect.
Tip: to have a nice top surface, I have changed to top infill pattern to Archimedean Chords.
Find me on Instagram for updates and new projects: https://www.instagram.com/dejennes/
You can simply slice the 3MF file for a good result. The gcode added is for MK3/S in PLA. The color change will happen after around 10 minutes when printing one keychain.
This one is printed with Army Green and Vanilla White Prusament.
The author hasn't provided the model origin yet.