If you do decide to sell you stash at your yard sale, I would like to suggest that you put an ad on Craigslist (if you have one for your area), specifically for fabric - who knows what that might draw in.
Of course, as others have suggested you can list it here as well. I see know that you have more than 20 posts but "new user" is still showing under you name. You've hung on to it this long, what's another month or so and you know everybody here would appreciate your stash!