Whenever we visit Legoland, here in California, one of Flynn's favorite areas is the Build & Test space in the Imagination Zone. There are race tracks and tubs of LEGO® around the room where kids can use their imagination to build a car to race. We spend an hour or two here every time we go. So over summer break I decided to make the kids their own race track for home, where they can build their own cars and race against each other, and against their friends when they come over.
These race tracks are easy to make, and a great activity to get the kids involved in helping with too.