I'm working up apples off of our apple tree. If you don't have a tree, look around your town and if you see a tree with apples, knock on the door and ask if they plan on using them. If they say yes, as a thank you, clean up under the tree of apples that may have dropped before you got there. Throw them in a garbage bag, either put it in your compost or put in your garbage this way you make them feel happy for letting you pick.
These apples are from our tree. When I get through all that I have picked it will be two bushels. I like to put up five or six bushels since the trees do well only every other year.