How can i make money as a 13 yr. old?

ok so this summer for my 8th grade trip we are going to Washington D.C. and i have to come up with some money (lets just put it like this......more money than i currently have) I dont expect fundraising to make all my money but it will help alot. I dont want to mow gr.....ove sold bracelets, and as a group project we sold lollipops and had a lock in but now im out of ideas?? any help