Cute and eco-friendly. It doesn't get any better than that. To make one of these adorable pom poms, all you need is a plastic grocery bag (white Target bags with red bulls’ eyes seems like the perfect choice), a pair of sharp scissors.
For full instructions, follow the jump, and if you're unfamiliar with pom pom construction, you might want to watch this short video, in which the maker uses her fingers around which to wind the yarn; however, I prefer using a piece of appropriately-sized cardboard. Via.