Messy Time, shows joyful, messy play in different environments: with art materials; with mud, sand, and water; in the kitchen; in the garden; in the bathtub. Messy time is growing time, and messy play provides rich sensory experiences and unstructured play. At the back of the book, a section for parents and caregivers has tips for making the most of messy play, including clean-up time. Infant - PreK. Boardbook.