I crochet pot holders out of left over yarn. Any kind of yarn.
For the pattern- I chain 30 to 35 stitches. Half double crochet in 2nd stitch from hook & in each chain all the way back to the original stitch. I put 3 stitches in that one & than keep stitching in original chain all the way back to turn chain. (What you are doing is crocheting an oval.) Just keep stitching until it folds into a square. I than slip stitch the opening closed.
Poof done.
Good luck
Billie G