I've used blankets in 2 quilts. Before my son was born in 1979, I made him a baby quilt using a pretty blue quilt top to cover one of my daughter's baby blankets and backed it with small blue checked fabric. Another time, I used a blanket that we received as a gift (didn't like the color)as batting for a pink quilt that I made for my daughter's bed. I tacked (tied) both instead of quilting them. They were both stiff but wore well and are still used now and then.