I think all attempts to think about reusing and recycling are admirable and I support all those who do so. I also think it would be equally as effective - probably much more so - to not consume as much in the first place. Ditching plastic bags or containers, even on a massive scale, won't do enough to stop and then reverse climate change, which is what this is all about. Turning down the heating, driving less (or at least more skilfully), just buying and consuming much less is easier and more effective.