I am not a paper cup. As seen in New York Times Gift Guide.

Lower your carbon footprint and get better hot-beverage performance with "I am not a paper cup."  This 3.5x6-inch double-walled porcelain cup will keep your bev hot and your hands cool.  It's silicone top stays on securely and offers better sipping than its plastic prototypes.  Fits in your cup holder unlike your regular mug. Fits in the world unlike standard coffee-house paper cups.  Dishwasher safe.