Playpen

The Playpen is a type of furnishing item. It is composed of interlocking panels, with one panel being an hinged gate, made of metal mesh screens. A playpen can be as large as one wants with one having being counted as having nine panels. The playpen is designed to contain and protect the infant, though this sometimes doesn't work as they have learned how to open the gate. A playpen is first seen in the Lone Wanderer's apartment in 2259.

Game Play
A player is required to interact with the playpen (by opening the gate), so that they can explore the room and find the You're SPECIAL! book. By forcing the player to take this action, the game designers are educating the players on the basic physical laws that govern this world.