Bankd: gamified childrens banking app

My project is an interactive and gamified banking app for children ages 6-15. The main objective of the app is to provide children with both financial literacy education as well as encourage them to save money. I have a general idea in mind of the features and functionalities that I would like the app to have but am open to creative suggestions to make this app stand out. My goal is to create an engaging experience for children that will help them learn more about money management in a way that will spark their curiosity and hold their attention.