This Heat-Activated Mug Reveals Facts About the Universe When You Add Hot Coffee
If you love coffee, a warm brew is most likely your morning must-have. Rather than drink from a run-of-the-mill mug, however, why not elevate your daily dose of caffeine with a cup that's truly out of this world? This planet mug by the Unemployed Philosophers Guild has taken the concept of “cool cup” to new heights. When empty, this black coffee cup features an illustration of the solar system.