Before I got my new sewing machine, I remember looking at this Car Cozy on Homemade by Jill (at work!) and wishing that I could make it.
It turns out, I can! It's just a little denim square that has little pockets for matchbox sized cars. The top half has a road applique for the cars to drive on. The whole thing rolls up and ties, which makes it very self contained in your diaper bag or at grandma's.
This one was given away as a present, but I want to make one for Ishaan and Amaani, and keep it in our car to pull out at restaurants.