I have Plenty of Yarn Said No Knitter Ever Coaster
Jenn Johnson individually transfers original designs to these fabric-top, rubber-backed absorbent nonslip coasters. They are affordable enough to enjoy several designs, or to give them as gifts. Each coaster is 3.5" wide and .25" tall.
Add a wooden coaster holder (which will hold up to 6 coasters) for only $6.