Our new K-Eco Solar Mug is making fans of coffee and tea drinkers all around the world. Our latest gadget, released in stores over the weekend, has been spotted in many hands, including those of the rich and famous. The mug is kept warm all day by the solar heated plate. And, you don't have to be in direct sunlight to do it. Even ultraviolet light in your office will do. The plate can also be heated by a USB port on your computer. Now that's convenience.