Making money?

what can a 15 year old girl who will turn 16 on june 30th, do in oswego new york, to make money. please no jokes, dont say prostitution its not funny i'm being serious i want to get a horse and my parents dont think i am serious enough for it and i found one that is only $300 and my parents said if i saved enough money to buy it, they would let me get it and they would pay to board it. i really do want a horse and its a beautiful one too, its a dun buckskin 7 month old stallion it has four white socks and on all four legs, black above that, and then a black dorsal stripe, and a black mane and tail, its so pretty, and a white streak on its face. i really would like to earn some money but i'm not old enough to get a job and i dont have a license also if you possibly know about any contests or anything with a cash prize i could look into that. thank you.