Some resources to check out.
Tax deduction info for charity quilting
http://www.quiltcentric.com/2013/01/...rity-quilting/
Goodwill valuation guide (not for stuff you make, but good for used items you donate anywhere)
http://www.goodwill.org/wp-content/u...tion_Guide.pdf
and the IRS Charitable Contribution regs (Publication 526)
http://www.irs.gov/publications/p526/ar02.html