So as not to frighten your infant with the sudden surprise - show him or her how to wind the Jack in the Box so that his head pops up. As a safety precaution do not let your child's face too near the pop up head.
Let your child explore the toy and its various moving parts.
Encourage winding and squeaking and show your infant his or her reflection and how to hold the toy by it's handle.
Sing-a-long with the melody "This Old Man" and teach your infant the song too.
Use the songs lyrics to help further your baby's vocabulary, body parts recognition and counting to 10.