Financial literacy and management are critical for the success of individuals. Consider offering a subscription type that allow parents to extend their subscriptions to their kids. I don't want to manage another subscription—I already manage too many.
This can help kids manage their allowance, spending, and savings. Not only would you be doing "good" by supporting financial literacy, you would be creating/training future customers.
My Microsoft and YouTubeTV subscriptions for example, allow me to extend what I pay to my family.