Children were reported to have
made inventive use of the materials’ potential for construction
(e.g., building a pyramid), their mechanical properties
(e.g., rolling balls down planks), their enhanced potential
when combined with children’s own toys and with preexisting
fixed equipment and “ball bag” items, their potential for
rule-based games (e.g., who was allowed to climb on a built
structure), their potential for competitive games (e.g., tirerolling