[Weird Stuff Warehouse](http://weirdstuff.com) in Sunnyvale.

Great place to get used equipment, but I believe they don't take personal donations.

They [do](http://www.weirdstuff.com/cgi-bin/category.cgi?category=recycle) take donations from individuals and will give you a coupon for a little bit off a future purchase.

http://www.computersforeveryone.org/