There is a swap on Swap-Bot to make one of these Kidlet bags designed by Jennifer Casa. They are multi purpose and kid friendly. They can hang on door knobs, drawer pulls, hooks, etc...I am going to make a few for our house. My son's could benefit to have one for their IPod and cell phone accessories. I am going to make one for my car. You could make the strap with velcro so that you could use it around the head rest in a car for toy storage or accessories. The tutorial is very easy to follow. It has a ton of great pictures for visual aid. Bravo Jennifer!
P.S. The link is to a PDF.