Students build an authentic or imaginative castle using colored Crayola® Model Magic. Smooth Model Magic over plastic bottles and cardboard tubes to make a large castle form. Knead two colors of Model Magic together with hands for a marbled effect. Flatten the modeling material with hands. Use Crayola Scissors to cut shapes for windows, doors, and a shingled roof. Firmly press pieces onto castle form. Embed small beads and other decorative items as desired. Dry.