Key Chain Solar Charger. Designed to provide power at the drop of a battery, on the go, anywhere you need it. They call it an emergency power backup, which probably reflects the fact that it will take three days of Gobi desert type sunlight to get this thing charged enough to make it worthwhile, but let’s just think of the children, shall we? Oh and just in case you live in darkest Europe, you can charge it up from a power socket too. At which point, you’re probably best off thinking of your local energy boss. $22.00.