That's only for appreciating valued items. Items like clothing, housewares, home decor do not appreciate in value so you can claim fair market value.. See the following..
"Special rules apply if you contribute:
Clothing or household items,
A car, boat, or airplane,
Taxidermy property,
Property subject to a debt,
A partial interest in property,
A fractional interest in tangible personal property,
A qualified conservation contribution,
A future interest in tangible personal property,
Inventory from your business, or
A patent or other intellectual property."
The following link is for tangible goods as outlined above..
http://www.irs.gov/publications/p526/ar02.html#en_US_2013_publink1000229745Because I can donate my whole store as "inventory from your business" and write off every dime even though I got most of it through storage auctions.