In Pictures: 15 coolest gadgets at Macworld/iWorld Expo

The Macworld | iWorld Expo in San Francisco is an Apple lover's Disneyland. Ashton Kutcher kicked things off by plugging his movie "iJobs," but the main attraction is the showroom floor where vendors display their wares, everything from iPad and iPhone add-ons to iOS apps to Apple enterprise gear.

HyperJuice Plug

A lot has been made about smartphone and tablet battery life, and rightly so. Used moderately, the iPhone and iPad have a tough time making it through the day. While battery packs have been available for a while, the HyperJuice Plug is a simple way to keep your devices charged while on the go. They come in neat colors, too. Starting cost: $129.95.

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