"If nothing else, they can use it as a coaster"!
Priceless.
If I could get my guests to use the dozens of coasters I strategically position around my house I would be a very happy woman!
Perhaps I should try leaving out odd items that are not meant to be coasters and they will be adopted as such for some odd and unknowable reason.
(My apologies to all for wandering off topic but I couldn't resist Carol's coaster reference.)