Simple devil's trap coaster from Supernatural. Printed in separate pieces for multiple colors. I printed all the pieces at the regular size and gently used a hammer/mallet to hammer the pieces in the holes (covered with something like a paper towel or a shirt). If they don't go in well, print the pieces at 99 or 98% and then try hammering them in. Sanding/post processing not required, the most I did was add ironing in Prusaslicer, but you can definitely try sanding the top down once all pieces are in.