The SunRocket solar kettle is available from http://www.SolarKettle.com. It uses an evacuted tube that is boosted by reflective panels to heat and even boil water in as fast as 15 minutes! It has a sturdy handle/stand and sides that folds away to look and work like a conventional 'thermos'. Go ahead and use it as a thermos! The SunRocket keeps the water hot for much longer.
Audio and videoSunRocket Solar Kettle(01:02)