Soles4Souls

Nike's Reuse-A-Shoe program only accepts athletic shoes, so if you have other shoes lying around your closets, Soles4Souls is a great place to donate.  They collect both new and "gently worn" shoes, clean them (if necessary) and work with other charitable groups to distribute the shoes to people in need throughout the world.  My favorite eco-friendly efforts are those that not only benefit the planet, but also help less fortunate people.  Find a drop-off location near you or shipping information.