Rusty Keeler's Natural Playscapes, Creating Outdoor Play Environments for the Soul is an explanation of and a workbook for creating children's outdoor play areas. These natural playscapes utilize "art, hills, pathways, trees, herbs, open areas, sand, water, music" so that "children will find places to run, climb, dig, pretend, and hide, with opportunities to bellow or be silent."

The International Association of Amusement Parks and Attractions (IAAPA) is an international trade association for all permanently sited amusement facilities such as amusement and theme parks, family entertainment centers, museums and science centers, zoos and aquariums, water parks and resorts, casinos, and the amusement industry manufacturers and suppliers. They are an industry resource for improving efficiency, marketing, safety, and profitability as well as being a united advocate with local, national, and international media and government officials.

A play and landscape design company, EarlySpace creates natural play spaces, outdoor classrooms, and sustainable landscaping for homeowners, schools, and children's programs. Nancy Striniste founded EarlySpace in 1989.

PolyFiberCrete is a lightweight synthetic concrete-sandstone textured material molded into solid play structures and site furnishings. Using a patented process of cellular concrete, polymer additives, molds, sand, air bubbles, and sandblasting, UPC Parks makes grip-textured climbing rocks and walls, caves, ledges, benches, planters, and playground sculptures.