We're trying to imagine anyone we know not smiling upon being handed one of these along with a cup, and the only ones who aren't going along with it in our imaginations are the ones who are difficult to get along with anyway. So you could buy these Monopoly board coasters
($15) to make the people you like happy, or you could buy them to make yourself happy. After all, you're the one whose (little, green, plastic) house they'll be in. Your friends are "Just Visiting".