You can add/remove letters from the word Sprout, and create a picture for that word next to it. There are 3 rules: 1. The picture should ALWAYS use the Sprout flower in one way or another. It can be just a flower, a person, a splash, anything. 2. The changed word MUST rhyme with Sprout. 3. You must ALWAYS make a picture for the new word.
Credit to @JoshsAccount, and myself, I guess. Credit to PBS for the PBS Kids Sprout (now Universal Kids) logo.