Click Builders Prism Jr. - 72 Pieces

The pieces are just the right size for little hands, and my toddler has been clicking them together into towers nonstop since we opened the box. It's clearly helping her hand-eye coordination while she plays.

My 18-month-old can actually snap these together on her own, which is a huge win. The pieces are chunky enough that she doesn't get frustrated, and I've already seen her fine motor skills improve after just a week of play.

My 18-month-old can easily snap the pieces together, which keeps him engaged longer than I expected. The only downside is that the blocks don't stay connected very firmly during more enthusiastic stacking sessions.