Road warriors often collect massive amounts of small bottles of shampoo from hotel rooms that pile up at home. One way to help others is to send your unopened bottles of shampoo to the charity Clean the World. Its goal is to eliminate hygiene-related deaths and illness all over the world by sharing soap and other cleaning products with people in need. You can send your bottles to the organization directly (get the address at cleantheworld.org). Another way to cut the waste of mini-bottles of shampoo completely? Don't take them. Unopened bottles will get reused.