For those of us not obsessively checking delivery status for iPhone 5s, here is a power pack for the iPhone 4/4S that might strike your fancy—Stay Charged With The SoL Hybrid Power Pack.
I have a couple different battery packs (I’m giving an extra to a friend), but they charge the “old fashioned way” through a USB cable to the wall (or computer, but you know). A solar charger certainly has a lot of appeal. You can just leave it charging cells up and keep it topped up all day. Very cool.