Imaginative play is a crucial part of growing up. It has a major impact on cognitive, emotional, and intellectual development. It’s also a joyous activity that gifts us with some of our fondest and most resilient childhood memories. Toys and games have long been a part of childhood, but the 20th century saw the rise of an entire industry devoted to the business of play, one that would constantly evolve over the years to reflect the rapid changes of the 20th and 21st centuries.