AviiQ has taken that a step further. Ready Clip cables are available with Micro, Mini and Apple’s 30 pin connector. Each one measures just 5.5 inches long and .25 inches thick. They're bendable, and feature a clip so you can easily attach it to your pocket, or the pocket in your gear bag, or whatever else. In fact, they were specifically created so you can carry them in your pocket like you would a pen.
The pricing is a little goofy on these. You can't actually buy all three types in a set. They do offer them in the various combinations of two, or you can buy them individually. Starting price is $12.99 US.
Source: The Gadgeteer