This is a quick 2 piece coaster-plant tray- spoon rest, soap holder, a spot to set a tea bag, whatever! I have found myself using these for many  things at different scales. It has 2 pieces for easy cleaning.  100% scale will get you a 102mm diameter base which is usually plenty for a large coffee mug. The pieces snap together easily and scale to any size. 

There are 3 files listed, this is meant to make it simple to color the pieces as desired.

-the base

-the insert

-both pieces together