Just stumbled across this post about donating yarn and knitting/crocheting materials to a wonderful cause--women at a drug and alcohol treatment center. Women learn to knit and crochet as part of their treatment.
More specifics are on the blog above, as well as this blog, from the center, but here's the donation basics:
If you have some supplies to share, you can stick the stuff in the mail and send to the house--please address to
Interim House Inc
333 W. Upsal Street
Philadelphia, PA 19119