If we all do our little part it will add up to a larger difference in the world.
For me being on location means bringing my own travel mug or keep cup. I now also travel with a cutlery pouch that has a fork, knife, spoon and metal straw. I do need to add reusable chopsticks and a napkin that I can take home to wash. It lives in my location kit that has all my clamps and cords and bits and pieces you often randomly need on location. If we all did this everyday, image how much plastic we could reduce daily.