When I was a kid I would carefully wrinkle up paper bags and make them look like little Matchbox cars so that I could play with my friends and their cars.  I never thought about how as an adult I would want to play with litte cars again. After seeing the potential fun that can be had while playing with the cars (look at the pictures below) I have decided that though Legos are still me favorite, Matchbox cars will be a close second.