If you're trying to prepare for the upcoming release of the new iPhone, this cute little case would work great, especially for current iPhone owners. The case is made to fit both the new and the old iPhone, so you could just swap it out when you get your new phone.
The best part is that they offer all of the same designs for any of the different iPods as well. Which means if you want your gadgets in all matching cases, you could. Not that you'd really need an iPod around with the new iPhone, but this leaves the option open to streamline your gadgets with matching cases.
They will also do custom sizes as well for all of your non-Apple gadgets. Each case is $21.90, no matter what the size, except for the custom case, which is only an extra $2.