Coat Hangers (Wood) Put in Garbage Made With Treated Wood Wooden clothes hangers are made with varnish to avoid splintering. Learn how to dispose of treated wood. Ways to Reuse Donate or Give Away Hang clothing on unwanted hangers when donating to thrift stores. Many will accept the hangers this way, though some will accept them individually as well. You can also give hangers away on Craigslist or Freecycle. Did You Know? The Most Eco-Friendly Hanger Which clothes hanger is the most eco-friendly? No hanger is easy to recycle, because most are made of multiple types of materials. However, wood hangers tend to last the longest, which makes them an ideal investment. Wire hangers tend to lose their shape, and plastic hangers often break.