Mophie Outdoor Juice Pack Plus
If you spend a lot of time outdoors, odds are you could use some extra battery power for your iPhone. So why not get it from something that's designed for away-from-desk use? The Mophie Outdoor Juice Pack Plus ($120) fits the bill, providing up to eight extra hours of talk time or seven hours of Internet use over 3G, and featuring a fittingly-colored orange and green case, as well as included GPS software to make sure you don't get lost out there.