The baby-safe mirror on one side is a surprise hit — my daughter keeps catching her own reflection and cracking up. Each of the six sides has something different to grab at, so she stays busy way longer than with her other toys.
Sophia I.★★★★★
My 7-month-old spends a solid 15 minutes just crinkling the textured sides of this cube, which is basically a miracle at this age. The peek-a-boo flap keeps her guessing every time, and it's soft enough that I don't worry when she inevitably chews on it.
George X.★★★★★
The little mirror on the side is what finally gets my baby to smile at herself, and the varied textures keep her hands busy for a solid ten minutes at a time. It's soft enough that she can chew on it without me worrying, and the peek-a-boo flaps are her favorite surprise every single time.