Do you have to buy a gift for someone? Instead of traditional presents (which consume tons of unnecessary resources), experiment with a truly sustainable gift-giving experience. Replace the incandescent bulbs in someone's home with compact fluorescents; install low-flow shower heads in your brother's apartment; buy your in-laws a compost bin and show them how its done; give a friend a collection of reusable bags; or supply your mom with a collection of homemade cleaning supplies.