Rapunzel, Rapunzel, let down your hair! While housing prices may be falling, your lil ones can live like royalty with the Calacastle cardboard castle ($125). Made from high-quality cardboard, the easy to build play set is large and sturdy enough for tots of all ages and can be decorated to your princess' specifications. With hidden storage areas and secret compartments, it is the perfect hideaway. The 41" x 41" x 49" kit can even be rearranged to create new layouts when kids become bored with the current one. And when they have had their fill of the set, it is completely recyclable.