A holder for the Captain America shield coasters designed by Mirabatek that I found on Thingiverse (https://www.thingiverse.com/thing:4638297/files). True, the coasters do not absorb liquids, but they look nice. The star fits tightly in the inset in the middle of the holder bottom, but I used super glue to ensure it stays put. I suggest printing the bottom in blue, then switching to red at about layer 26 (for 0.2mm). then printing the star in white.
The author marked this model as their own original creation.