Apple includes a USB power adapter with every new iPhone, iPod, and iPad, so in theory I should have...oh, at least 9 (no kidding) in my possession. In reality I am always looking for one. This is probably because I leave them behind in hotels or let friends borrow them, but how they disappear isn't the issue. The issue is how much I hate paying Apple for a new one. Luckily, RadTech's ACpower is cheaper than Apple's power adapters, and it can charge two iPads at once.
Ever go on a trip with your iPhone and iPad and get sort of annoyed that you can't charge both at the same time? Boost Cases solves this problems with an external battery pack that will enable you to charge two mobile phones at the same time.