January 3, 2013. Green Idea #3 Shopping with bag. Say no to plastic. Paper does not constructed from petroleum products and toxic chemicals like plastic. Think about how many trees going to be cut down to make the one time use bag. Start to using the reusable green bags which made from hemp, cotton, or bamboo are a better choice. It will not only reduce the emissions of toxic air, but also save the natural resource. Take a little step to become greener everyday.