Try to Buy Products with Earth-Friendly Packaging
When you choose what to buy, you are choosing which packaging you buy too. Unlike the products you are buying, which you will use or eat or wear or whatever you want to do with them, the packaging usually goes straight into the trash - or at best, the recycling.
In addition to reducing the packaging you buy, see if you can reuse it for some other purpose. For example, you can use boxes things come in for mailing packages.