Did you know that eBay has a charity program called eBay Giving Works?  When you list an item, you can choose to have a portion of the sale price go to your selected charity.  You can feel doubly great because your item sold and you have helped your cause!  eBay Giving Works also has a new program called Donate Now.  You can just click and donate any amount above $5 to your selected cause.  When shopping, look for the ribbon that indicates that part of the proceeds go to charity.  Happy eBaying!