Keep all the excess cable that comes along with your headphones under wraps, while protecting your iPhone, with the Cordli Case ($15-$25). This iPhone case (designed to accommodate an iPhone 4 or 4s) has grooves and clips that weave across its back, letting you stow away 10 to 20 inches of headphone cable. It's perfect for storing shorter headphones while they're not in use, or for taking out some of the slack in a longer cable, avoiding bulk in your pocket. While not yet available, an iPhone 5 case is in the works, and should be ready soon. Available in blue, black, or white.
Make dead devices a thing of the past with the Dark Energy Reservoir ($129). You've all been in situations where your smartphone, tablet, or camera needed some extra juice — whether you're traveling on a plane, train, or bus, you're in an emergency scenario, or you're outdoors miles from an outlet. This slim, portable charger holds enough power to charge the average smartphone for an entire week, and it does it as fast as a wall outlet. With the ability to charge two devices at once, and compatibility with any USB charging device, you'll never have to worry about charging again.