Squeeze and settle into your chair on a long-haul economy flight, and you might be offered a drink, in a plastic cup, which you'll stir with a plastic stick.
You might be given a pack of toiletries - wrapped in plastic, containing a toothbrush - wrapped in plastic.
You might watch a film, using headphones - wrapped in plastic. You might enjoy a meal which you'll eat with plastic cutlery, also wrapped in plastic. The list goes on and on.