It's easy to picture the inspiration behind Eero Aarnio's ball chair - the ball itself. The ball chair has been described as a 'room within a room' since it encompasses its sitter in a cozy environment that is almost independent of its surrounding. The ball chair has been seen in numerous movies, usually science-fiction, and further illustrates the ingenious design of the chair. The ball is made from fiberglass with upholstered interior and spins on its axis, offering the sitter a view of the room in every direction.