If you are from Europe and have a recent iPhone, you will probably recognize the charger shown here. You may also have noticed that you can almost wind your USB cable around it - but not quite, frequently resulting in cable anxiety.
I realized that one end of the charger is already perfectly fit for the job, and all you really need is the same shape on the other side as well. The Wrap provides just that, clipping securely onto the USB plug.
This item is for sale; more information through
A US version is coming; drop me a line through the link above so I can notify you when it's available.