Fern Hill in South Amana has tons of batiks and Japanese taupes, as well as a lot of other fabrics. Stephanie Brandenburg's fabrics are featured there. Fern Hill is usually a vendor at the DM quilt show, so their fabric selection in the store is depleted during that time. Inspirations Quilt Shop in Hills is very nice (I have not been there, but have heard good things). Dutchman's Store in Cantril (close to the MO border) is a Mennonite general store. I have not been there, but hear it is definitely worth the trip.