Love Habitat for Humanity's mission but can't donate the time? It turns out that there are more than 500 locations which accept — and sell to the public — donated building supplies...If you're remodeling your home, you can donate unused supplies and old appliances to Habitat for Humanity. (They'll even take your old stove off your hands.) It's a way to support their cause even if you can't donate the time to help them build. Because of these donations, the Habitat Restore is also a pretty good source for people who are just looking to do a little fixing up: they offer everything from surplus paint to barely used lighting fixtures and they'll sell it to the public for a fair price.
Find out if there's one near you at Habitat.org.