Check out the USB ChargeDoubler. It's a very short charging cable for your iPhone (there are models for Android devices, too), that is smart and clever. It's smart because it has built-in circuity to recognize the device it's plugged into so it can send the right amount of power for maximum charging speed. You'll find this same circuity on better portable chargers. It's clever because it has magnetic connectors that allow you to swiftly and easily snap it around your keychain, a loop on your backpack, or whatever. The company making it, WN Products Limited, just launched an Indiegogo campaign to help ramp up manufacturing. That means you can get a USB ChargeDoubler at a good price—US$12 for one or $19 for two. The company's goal is just $14,000. The video has more information, including detailed images of the product. I like it.
Check It Out: USB ChargeDoubler Mini Charging Cable Seeks Funding