My friend and I need to make money to pay for our class to go on a retreat/field trip to Washington D.C. We need to raise $150+, and it is due by spring. We have nothing. The catch is that the money needs to come from a service, so it can't be from home chores and surveys online, etc. We are only 13, so it is hard for us to do stuff and services in peoples' homes. We were thinking of getting the money from some service in the public where people can tip us. We are big sports fans as well, if that helps. Nothing online please!!! Does anyone have an idea of how to make money this way?