The easiest way to leave will be as someone older. Oliver gets to his feet and toddles over to a few abandoned diaper bags, hoping to find something to change into.
To his surprise, Oliver finds a package of unopened barrettes in the second diaper bag. He doesn’t want to be a girl again, but he doesn’t want to be in a diaper more. Hopefully, these barrettes weren’t meant for someone even younger than him. Oliver slips on the ring and puts the barrette in his hair.
Promptly, his hair lengthens past his shoulders and he feels the now familiar sensation of his reproductive system changing. She grows larger. If she had to guess, she was kindergarten age again. The diaper and clothes are incredibly tight and uncomfortable.
Quickly, Oliver looks in the bag. There’s a skirt clearly meant for someone younger, but should fit, and a jacket in her size. She’s disappointed to see no undergarments, but doesn’t care at this point.
Oliver takes off the ring, removes the too small diaper and clothes, then pulls on the skirt and jacket. Feeling much better, Oliver leaves the playground.