Back of the door storage: I love this idea! Try using an over the door clear plastic shoe organizer for extra storage. You can fill those easy to see inside pockets with lunch snacks, road trip snacks,.
"Soup"er storage idea- take an empty soda can box, cut a hole in the back big enough for a soup can and cover with decorative paper. Put a label on the front and bam, soup can storage! I have done this but I never thought to cover them.