ArtFire

Great little pair of bright red boxers makes a real conversation-starter when used as a coaster! Cotton yarns absorb any drips, and the round flat bottom keeps your container safe. Rubber band is worked in at the top to keep it in place, and it fits a 12-ounce can or standard glass. If you need one for an unusually-sized container, send a tracing of the bottom circumference with your custom order request.

Have a co-worker who calls cosies "panties", and made these to match a cosy that looks like women's panties.

worsted-weight and lightweight cotton yarns, rubber band