Yes! I buy sheets at the thrift stores to use as backing, or to cut up for scrappy quilts. One time, I went to the GW and found half a set of beautiful, floral sheets, so I bought them. Then, I went to the other thrift store and wouldn't you know it, there was the other half of the floral sheet set. Now I have the full set, which I didn't cut up for quilting. Instead, I use them on our guest bed.
Occasionally, I'll buy other items, s/a shirts and skirts at the GW, but they're way too expensive these days to make it worth while.
~ Cindy