For the top, my daughter and I worked on a little project. I asked her for a list of words that she thought of when she thought of the play room here is what we came up with:
We then agreed our favorite word from the list was "SMILE." So we turned to the cricut and cut the letters out along with a bunch of what we agreed looked like "bubbles." We had so much fun making the bubbles that we couldn't stop and ended up with extra's which now are on the bottom of the rail... for now. We'll likely swap these out as we feel like it.
For now, it certainly makes me Smile.
A couple of close ups: