There are a lot of older people or disabled people that could use a little help now and then. And there are a lot of people that are so busy they don't have time for some chores or maybe they are just lazy.
I would suggest making a handbill on your computer. Offer to consider anything, but list ideas of things you are willing to do. Then knock on doors in your neighborhood and hand it to the person who answers the door. If no one answers leave it in their door.
Even if they have nothing for you to do at the time, things change, and they may have something for you later. So, every once in a while, walk around the neighborhood and knock on doors again just to remind people that you are still available.
Ask the people you talk to if they know of other people who might use your help.
Instead of naming a price, I suggest that you leave the amount you are paid up to the customer. Many times, people will give you more than you are worth.
Here are some ideas:
Mowing grass, shoveling snow, washing cars, cleaning garages, sweeping floors, washing dishes, washing windows, taking mail to the post office, grocery shopping, reading for a person that cannot read for themselves, walking their dog, changing cat litter, etc.
Make sure it is OK with your parents!
Good luck!
Chuck