Less is definitely more with this cardboard divider by legendary Italian designer Enzo Mari, who first brought the creative structure to life in the ’60s. Dubbed “Il Posto dei Giochi,” which translates to “the place of the games,” the 10-foot-long corrugated sheet is composed of 10 panels, each with a different set of colored symbols, perforations, and shapes.

The flatpak structure was designed not only to close off a play area, but also as the object of play itself. You won’t find any instruction manual, however. The only rules are that there are no rules, and the purpose of the divider — a fortress? A rocket? A bustling city? — is entirely up to the players’ imagination.

+ Il Posto dei Giochi $110 at Museum of Contemporary Art Store