Double knit quilts were all the rage in the 70's and 80's. Then double knit became hard to find. When I worked at our thrift store, people would come in asking for old double knit clothes.
They made lap quilts mostly. Simple patterns - 4 patch or 9 patch or wide strips. They backed it with flannel and tied them. The nursing home still has some of those. They wear like iron, even with frequent washing.
They didn't bind them, just birthed them. You would have to use a ball point or universal needle.