Sadly, most places don't hire people of our age because of labor laws. I'd assume babysitting and house work if you live near people. Alas, I do not, so I will be working in the corn fields in 6 months
A lot of local places will sometimes hire younger kids. If you have a few stores in your area that are small local businesses you may get a job there such as cleaning or working in storage. In my town the restaurants down town hire 'bus boys' basically cleaning tables and small jobs.
Maybe ask your parents to help with their job? Lemonade Stand Pet Sitting House 'Sitting' Play music on the street corner I don't know much more but just try and get your name out there for your passion!