Stacking toys make for essential baby gear — great for fine motor skills and learning to love the sound of crashing blocks. These chunky wooden pieces teach kids colors and shapes and are easy for little hands to grasp. Also, this set is a great way to indoctrinate them into Sesame Street’s biggies, including Cookie Monster, Oscar the Grouch, and, of course, Elmo. There’s a ton of stacking toys out there, but the Sesame Street hook will keep kids, well, hooked.