Sweet, sweet sisters playing peek-a-boo can establish fond memories between them forever. There is a relationship bond forming that is built with trust, fun, and an overall intrinsic motivation to keep it all going. They are naturally looking for each other, taking turns with finding each other, and waiting patiently to be found. This very first playful game that parents may initiate earlier in infancy, can grow with them into their toddler/preschool years. This idea of under