I Never Thought Much About My Baby's Play Mat — Until I Discovered This One

Perhaps the most engaging flap, this removable piece has four "windows" that store a series of different cards that come with the play gym. There's a set of black-and-white cards for those first few weeks when newborns can only see in high contrast. There's a set of body cards that show different body parts, like mouths and noses. There's also a set of "object" cards, like a banana, a beach ball, an avocado — the idea, too, is that you can add photos and your own DIY flash cards to make it more personalized. Finally, there are two mirror cards to let babies look at themselves.