build an app that help people save money. HAve them set a financial goal target, they can put money in but cant take it out. they can only take it out once the goal is completed. they should be able to take out a loan based on the value of how much they have deposited. theyll never be able to take outmore than 10% of their loan via a loan.no credt
make a plan on what technologies you are going to use and how you are going to build this