Do your kids and annoying house-guests just refuse to use a coaster? Give them one of these stamp mugs with an interesting floral patter on the base. These mugs come in two different designs that interlock in a few places so you can go nuts, stamping away at your gorgeous coffee table.
These mugs look pretty decent, even if they do cost a bit of coin at $59 for 2 mugs. Nobody said making lemons into lemonade was cheap.