Are there any ways to reuse the plastic bottles?
"Single use" plastic bottles, like for milk or soda or something, should not be reused for drinking because they're not designed to be used long term and may leak harmful chemicals into liquid you store in them. But you can reuse them for other things. If you google there's a lot of ideas about ways you can use plastic bottles for other things. One common, and easy, use is storage. You can cut a milk jug, for instance, in half and use it for storing things. Milk jugs are also great for water for non potable uses. My father is a potter and he uses them to carry water to his workshop (which doesn't have running water itself). I've also seen people turn bottles into planters.
I save mine up for our monthly bonfire. They make the most awesome smoke
Throw them in the ocean and help speed up earths destruction