Being a kid is both tough and easy. It's easy because you don't have anything to worry about. You're just a kid so no real responsibility falls on your lap. It's tough because you worry about everything. Kids are too young and inexperienced to know enough about the world, which means everything is worrying. Where could a kid go to get some certainty? They could grab one of these fortune teller thingies.
This was a great way to figure your life out. You'd pick a color, and then a number, until finally finding your answer. Hundreds of these must have been made a day, getting passed around until they were dirty with kids fingerprints. Most of the time its power was used for stupid stuff like telling you that you'll marry your best friend Billy.