The Hot/Cold Mug Tells You the Temperature of Your Beverage

 - Aug 31, 2010
References: iwantoneofthose & foolishgadgets
Ever picked up a drink that is either too hot or too cold? That problem can be taken care of with the 'Hot/Cold Mug.' The cup changes its message depending on the temperature of the liquid inside.

When your drink is hot the 'Hot/Cold Mug' will read "HOT" with a white background. If your drink is too cold then the mug will say "COLD" with a navy blue background, and if it's somewhere in between, then the cup is half white and half blue.