I was trying to help my sister think of a "boy" party favor for the two boys that were attending my niece's Rapunzel birthday party and I came across a picture of car wallet online. I searched for a tutorial but I couldn't find one in the style that I liked so I had to wing it.
I made up my own pattern mostly by trial and error. Once I figured out the size I wanted, everything else was pretty easy. The hard part was figuring out how big to make the pleated panel that the cars fit into. It took a couple of tries but I was able to work it out. Luckily we still have a big box of matchbox cars that I used for measurement.crayon roll.