I have been saving empty toilet paper rolls for some time now. Why, I really don't know. But I realized that I had A LOT! I also noticed that Matchbox cars and Hot Wheels fit inside of them perfectly. So I came up with a great craft and toy.
Take the rolls and glue them together in any configuration you like. I did a pyramid. Once it is dry, use newspaper strips and paper mache to cover the whole outside of it. After this layer was dry, I let Zane paint it. He loved the paper mache and the painting. He also has a new parking garage.