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I'm glad to read your idea.

I agree that we should eco-bag and tumbler for a long time. But it is really better that use disposable? Eco-bag and tumbler have a possibility. Because we can warn and struggle that use them more eco-friendly : use them frequently or buy them minimum. 

But when disposable get more used, we can't do anything for the environment. Disposable commercialization is  too irresponsible behave.