The 10 Best Toys For 3-Month-Olds, Based on Pediatrician Advice

"Making Faces: A First Book of Emotions" ($7)

Another recommendation from Dr. Choi for its range of expressive faces, this board book helps parents and infants get a jumpstart on emotional identification (a key to regulation and reducing tantrums later). Emotions expressed include happy, sad, and surprise, and parents can make the faces, too, for a more interactive storytime.