The folks at Prong have a clever idea in the PWR Case for iPhone 5 and 5s, the successor to the PocketPlug. The company bills it as a wireless charger, but a less succinct way to consider it is that it's a battery case with its own built-in plug. That means you can use it to recharge your iPhone battery while you're on the go. When you need to recharge it, you can detach the battery portion of the case to charge on a wall socket, or plug the whole case in to recharge both the battery and your iPhone at the same time. Because the wall plug folds out from the body of the PWR Case, you don't need any charging cables. Like I said, that's clever! Prong is offering the device for pre-order, and like Coin, the company is allowing customers who preorder to get a $5 credit for every new customer they refer. That's also clever. PWR Case is $65.
Check It Out: Prong PWR Case Marries Wall Plug to Battery Case