Out of the given options, Polly Pocket is the oldest product. It was first introduced by Bluebird Toys in 1989, while Chia Pet was first created in 1977 and Cozy Coupe was introduced in 1979. Polly Pocket was initially designed as a tiny pocket-sized dollhouse with miniature dolls and accessories. Over the years, it has undergone several changes in design and ownership but still remains a popular toy among young girls.