How many "smart" keyrings and chargers have you come across lately? Three? Five? A dozen? If you've lost count, here's one more to add to your list. WonderCube is frighteningly true to its name because it is such a wonder to behold. This tiny cube that can fit on the palm of your hand has almost everything, and we mean everything, you'll need for a mobile phone accessory: charger, external storage, stand, or even a torch. All it's missing is the kitchen sink. Well, that and some location-based features.