What are some free things you can do in Florida?

Ok so i need money for my new iPhones data. I started babysitting. Well I have a car and the parents are ok with me taking their kids places. I don't have a lot if money I'm 17 btw, what are some free things I could do with kids 1-12 that are free I already know you can go to the beach but what are some other things? Please include things for older kids because I do babysit 11/12 year olds thanks

Swimming
Go to a park
I don't know; you need money for everything nowadays!