Imagination is one component of creativity; self-expression is another. The early childhood classroom should be full of creative possibilities that allow children to use their imaginations. For creativity to flourish, staff must provide an environment that fosters creative expression. Imagination itself is "the act or power of forming a mental image of something not present to the senses or never before wholly perceived in reality" and "the action or process of forming such images or concepts." Imaginative play serves a critical role in a child's overall healthy development and future success in life. Imagination deficit is a call to action for early childhood professionals who are in a unique position to convey this message to parents, collaborating with them to address this issue by providing the environment, materials, time and encouragement so that children fully develop this invaluable resource ... the engine that will drive their success in school and adult life. (Contains 2 online resources.)