Use packaging that is both made from recycled content and can, itself, be recycled. The most commonly recycled materials are glass, steel, aluminum, cardboard, and paper. In the 1990s a method to label recyclable plastics was created, inserting a code number into a triangle, with each number associated with a specific type of plastic. The most commonly recycled plastics today are #1 and #2. Plastics made from polypropylene are labeled #5 and are commonly used in yogurt, cottage cheese, hummus, and medicine bottles. No. 5 plastics can be recycled and repurposed into toothbrush handles and other utensils.