As well as a way to let computers communicate with peripherals such as keyboards and flash drives, USB is also becoming something of a de facto international power supply standard. Some airlines have a USB connector built into seats that allow travelers to recharge their devices, and in my hotel room here in Las Vegas there's even a USB connector built into the desk for the same purpose. Kensington are taking advantage of this trend with a smart little number indeed. If you plug the Kensington Rechargeable Pocket Booster into a powered USB port, it can charge two AAA batteries. These batteries can then be used in your camera, flashlight, or whatever. What's really neat is that, once unplugged, the Pocket Booster will let you then use these recharged batteries (or even disposable non-rechargeable batteries) to power, say, your cell phone or iPod (you may need an adapter, sold separately). The Pocket Booster is available now, and costs $25. At this price, and given its small size, this gadget should be in every road warrior's kit.