Imagine what we could do if we had a big, centralized push from the government to normalize carrying and reusing your own water bottle/stanley cup/tumbler/whatever else. We’re still talking about a very small proportion of the problem but I think it’s totally doable (although it would have to be followed through on, since half-assing it would just result in a lot more waste making reusable bottles that don’t get reused enough times to justify their production).