Is there a place where I can find out how I can how much to claim as a charitable donation on taxes next year?

If you didn't get a receipt for the items, you can't take a deduction. And all items must be in at least good used condition to deduct the donation. The website a href="http://www.cincinnatigoodwill.org/donating/FMV2005.pdf" rel="nofollow"http://www.cincinnatigoodwill.org/donati…/a will give you guidelines on valuing each item. The deductible amount is what they can sell the items for, not what you paid for them.