1. Printing Less Stuff = Using Less Paper. Paper makes up about 35% of our waste stream - even though it’s one of the easiest materials to re-use and recycle! First of all, organize your inbox to make e-mails easier to find and reference. You can encourage others not to print your e-mails as well. Make back-up copies of important files and e-mails and keep them on an external drive. When you do need to print important documents, make sure you use a sustainable paper, and set your printer or copier to print on both sides of the page.