Wouldn't bundling the costs of the negative externalities associated with the production of the new cars, iPhones, and clothes as a tax levied against the manufacturers "address" the "consumerism waste"? Manufacturers are very good at passing costs on to consumers, and innovating to drive costs down in the face of competition. If your goal really is to reduce environmental impact (and not just being "anti-consumerist") then it would seem like using the market to do that would make more sense vs. trying to change the habits of mass numbers of individuals.

What does new clothes have to do with climate change? In the scheme of things it's all about vehicle emission and coal fired power plants. Everything else pales in comparison so focus on those.