Ok, this is a sidetrack but hear me out. Floppy disks would make awful coasters. A coaster has to be somewhat absorbent to avoid spilling condensation water on the table. This is why cork is the most popular material for coasters. The best coasters are a cloth top over a cork shape with a plastic rim and a felt bottom. This ensures total protection to the table and gives enough freedom to be creative with shapes, prints, colors and figures. The novelty printed plastic disks are the worst coasters possible, and floppy disks will only drip all over the table defeating the purpose of a coaster.