You can easily make a "hook" from a tree branch.
Start with a tree branch that is long enough to reach the limb you want to pull down.
Break off all the twigs flush with the branch, except for the twig closest to the thick end of the branch. Break that off at a length of about 2 inches or so. That's the "hook."
You hold the branch by the skinny end and extend it up and hook the limb and pull it down. Usually you don't to pull it down very far, before you can grab the end of it with your hands, and pull it down further that way.