I made a dishcloth tonight while watching TV. It is a quick and easy pattern.
I used cotton yarn.
Cast on 40 stitches.
Row 1: *Knit 4, purl 4*, repeat pattern to end of row.
Row 2: Repeat row 1.
Row 3: *Purl 4, knit 4*, repeat pattern to end of row.
Row 4: Repeat row 3.
Repeat rows 1 - 4 until cloth is the desired size.
Bind off all stitches reasonably loosely to allow for stretch.
Sew in ends.