You never know when you might want to whet your alcohol appetite, so the Collapsible Shot Glass could come in mighty handy. Just as its name entails, this stainless steel pony is a convenient shot glass that condenses to become the perfect-sized keychain.
Yet the Collapsible Shot Glass isn't just for shots of liquor. It can be used for hot drinks as well, such as espresso drinks and the like. Sold for $12.85, it comes with a leather travel case.