If your guild is a non-profit, then you certainly can claim any donated quilts as a charitable deduction. If it is not incorporated as a non-profit, then as far as I know, you can't claim a charitable deduction. I believe that technically you would need a receipt from the guild for the donation if the value of the items is more than $250 - I have done this with donations of goods to other non-profits and they are have always been willing to provide such a receipt. Depending upon your circumstances, however, as mkc mentioned above, the standard deduction is quite high, and you would have to have considerable deductions (charitable or others such as mortgage payments and state/local taxes to some extent) to make it worthwhile.