When playing board games is everyone ALWAYS the same color? This set of coasters are perfect and fun. I printed these by using PrusaSlicer and putting color changes at the appropriate layers. The outside rim is slightly higher than the player, which helps cups remain solidly on the coaster.
I have a friend who thought up the idea, I built it using TinkerCAD.
I printed this used standards settings on my printer. I put in a color change in PrusaSlicer for the top 4 layers or so of the non-silver area, then changed back for the first layer of the man.
The guideline I used was that the "bottom" layer of the letters should be silver. This helps the letters to really stand out.
The author hasn't provided the model origin yet.