This ultra-useful USB device will help you keep your coffee or tea warm. Just place your coffee mug or tea cup on the warming plate which gets its power from the USB bus of your computer, and the USB Coffee Warmer (that certainly also works with tea) will keep it warm for about 40 minutes.

Neither coffee mug nor coffee included. And no tea cup or tea either.

See also: USB Coffee Mug Warmer incl. Steel Cup