They would mow the lawn in the spring, summer, and fall, and in late fall they would rake leaves and bag them up for her. If so, you can offer babysitting services and earn some cash that way. Look in tall weeds or shallow ponds. What to do with the money you make in your teens Earning money in your teens is exciting. Great article! For example, you can earn more being a waiter or waitress who earns tips instead of an hourly wage.