In case you would like to make one for your home or for a gift here is a quick pattern.
Simple Crochet Washcloth Pattern
Hook size G
100% Cotton medium gauge yarn
Row 1: Chain 40.
Row 2-31: Chain 1 (for your first stitch). Half double stitch in each remaining stitch.
*As you approach the last row take a minute to measure and see if your washcloth will be square. You can do one less or one more row if you need to help get a nice square washcloth.
*Try changing colors for some variety. You can do stripes or even an ombre washcloth to match your preference and style.
Linked up at The HomeAcre Hop.