Buy the CDX Blocks Little Dipper Roller Coaster Building Brick Set at Michaels.com. The Little Dipper is the perfect example of a "Kiddieland" coaster with a simple loop that goes down, up and around. Just like the real thing, once the car reaches the top of the initial hill, it is designed to traverse the whole track back to the starting point, using gravity and potential energy in the most fun way possible.