This set of three black power items for iPods and iPhones offers generic support for these and other USB devices — you need to supply your own Dock Connector cable.
myCharger ($25) is a simple USB wall adapter; TekCharge MP1550 ($25) lets you supply both an Apple cable and your own AA batteries to provide roughly a full battery recharge for a first-generation iPhone, and TekCharge MP1800 ($45) has its own lithium ion rechargeable battery inside, capable of more than fully recharging a first-generation iPhone once, as well as the straight-from-Taiwan ability to serve as an LED-powered light.
Each is packaged with a retractable USB cable, tips for a bunch of non-Apple devices, a carrying bag and a lanyard necklace.