Perfect for the car!
Car Seat Organzer PDF Sewing Pattern - via @Craftsy
Book holder for the car :)
car craft tidy
Make it Now 4 Summer: Car Trip Seat Caddy
Shoe-Bag Organizer - Martha Stewart Crafts Great for road trips with kids!
Car tidy made from a cheap ikea box, a coke bottle, small coke bottle and some fabric. Glue gun so no sewing required.