Melissa & Doug, a popular toy-making company, has entered a multi-year partnership with the National Park Foundation (NPF). As a part of the partnership, Melissa & Doug has pledged $1 million. The toy company and the NPF are developing a collection of nature-inspired toys, which includes nine items. The items, which were designed to reflect the essence of the U.S.’s national parks, aim to spark kids’ curiosity about the outdoors.