Educational AND creative play: Tinker totter rockets includes removable pieces so children can build their own rocket ships. All parts are universal, so they fit together in various fun combinations. The construction and space adventure Playset encourages your little one to learn how to build their very own customized rockets while playing. This Set was made to foster problem-solving skills and encourages creative thinking. Our wooden playsets are made from sustainably grown rubberwood and finished with non-toxic, child-safe wood stains.