Carrying around a charging cord for an iPhone, iPad or iPod is no fun, but it's a necessity if you want to keep your device alive. The Kii is a small, key-shaped charging connector that fits right on your keychain.
The Kii is shaped to look exactly like a key, and it hooks onto your keychain so it's easy to carry around. The Kii plugs into any powered USB port, so provided you can find a computer somewhere you'll be able to charge your device. The Kii comes in two forms, a 30-pin version for the iPhone 4S and earlier for $US19.95, and a lightning version for the iPhone 5.
Kii ($US19.95-$US39.95) [Bluelounge]