Buying used clothing and other used goods diverts useful items from the waste stream and reduces the resources needed to make and transport new things.

Check out www.Freecycle.org
in your local area for a variety of used goods.
Take Another Look at Vintage Clothes
Warning: Joining a Freecycle group will create a plethora of emails from people who want to give their stuff away or are looking for something free.

Manufacturing companies may buy and sell excess materials online: Resource Exchange for Eliminating Waste (RENEW)