I have been a volunteer with several organizations. These days I volunteer for Sierra Club Inspiring Connections Outdoors (formerly Inner City Outings) and Children's environmental health network.
I used to volunteer for the DC chapter of the Sierra Club as well as Sierra Club Outings (hike leader). They are doing great work!

The following are some other organisations whose work I admire and like to work with:

• Association for India's Development (AID) based in College Park, MD.  
• Anacostia Watershed Society
• Earth Sangha
• National Arboretum
• Capital Area Community Foodbank

By purchasing items directly from the artist/worker you are providing an opportunity for them to sustain themselves in a dignified, equitable manner.

The Fair Trade Federation has a list of both retail and on-line stores.

 Mercado Global was founded by two young American women after a trip to Guatemala. They recently topped a Newsweek list of people who have done great service to humanity.

 Tilonia.com is a web-site inspired by students at the barefoot college in Rajasthan that sells fair-trade goods from people in that area.

 The Charity USA web-site  has a list of fair-trade shops as well as web-sites that donate part of their proceeds to specific causes.

 Fair Trade Coffee. 

 The Ultimate Green Shopping Guide  has resources to help you shop for products that are produced in a sustainable way.

 Another Green Shopping Guide  (thanks to teachers and students from Bay Minette, AL for letting me know).

If you are not satisfied with these web-sites then just google "fair trade shopping"! :-)
Updated 8/23/10 ; Checked 5/7/2015 ; Updated 10/10/2022.