Create your own Gift economy not for profit organisation (so that you can recycle/reuse unwanted items while also selflessly giving and helping others) or use one of the existing organisations below...

http://www.MUSTart.org (Art Gallery that supports local artists while giving art and 100% net profit away (http://www.Traidmark.org)
http://www.BARcampBAR.org (FREEtraid Cafe that anyone can set up to raise funds for good causes)
http://www.webjam.com/freebookclub (Free Book Club where you send books to anyone and record them on the map)
http://www.webjam.com/freehotel (Free Hotel can be created anywhere by anyone wanting to set up a sustainable community hotel)

Get started now by giving unwanted items away and record it on the map. List your need then swap knowledge on how to make the most each other. Meet like minded people near you on the map or add your location and create your own community meetup then find others in your area to share your experience with. 1. Find a location 2. Print off poster and put up there 3. Register the location and what you want to do (list what items/skills you have) 4. Go round your neighborhood posting notes through doors about your project (ask for help and collaboration). 5. Raise funds by collecting donations 6. Set up a community cafe to raise funds by giving away free drinks in exchange for donations 7. Create a trust library (MUSTart.org have more details)