A popup adventure playground is a temporary play space created by children and playworkers, using loose parts like cardboard boxes, tires, rain gutters, and fabric. It allows children to use their imagination, creativity, and problem-solving skills to build and explore their own play environment. The benefits of this type of play include measurable increases in well-being, concentration, feelings of mastery, gross and fine motor skills, language and vocabulary, and even better eyesight.