The stacking rings toy has always been a must-have when it comes to stocking a new baby’s nursery. It’s a simple toy that can keep a child occupied for hours. Skip to content.

These toys for 9-month-olds will help them learn and grow. As your baby hits 9 months old, ... Dr. Preston says stacking toys like rings aid in fine motor skill development.

Fisher-Price's Rock-a-Stack Sleeve Toy is beloved by parents and their kids — get yours for just $5 on Amazon.