We have to think about reducing garbage and wastes for the universe. Eco bag is recently more popular in Japan. When we go shopping, we are given vinyl bag for putting things in after buying. Japanese consume a lot of these bags and it is a problem for environment. We buy and use Eco bags to reduce them and this action is thought as the sign of thinking of earth. When we go to supermarket or convenience store, we say "No vinyl bags" to clerk at the register. (However, I often think it is a trend. Because some people buy expensive these bags of brands and are satisfied. I doubt they are really thinking of environment.)
Anyway, it is important to do something for environment conservation. But there was a traditional custom in Japan. It is Furoshiki. Furoshiki is a square cloth and we used it as the material of wrapping. A Furoshiki has a lot of various ways to use. I bought a book of Furoshiki and large Furoshiki. It is very light and simple. Very convenient ! Only a cloth ! This is global Eco system. I found the website in English. http://furoshiki.com/home.php You can try Furoshiki Bag.
This is my Furoshiki. The design is Hyotan (Gourd).