Here is a Dollar Store bar towel with a crocheted topper added. I used a milk jug ring for the hanging loop.

This is a quick towel topper as it uses a small triangle shape and about an ounce of cotton yarn to complete. There is no cutting or sewing necessary for this towel topper. I used this free triangle ring towel topper pattern to crochet the project with a few modifications. Because this towel is smaller, at row 3, I did single crochet (SC) decreases (Dec) all across in BLO, then SC in every stitch next row. Repeat these two rows, twice.
At row 8, Ch 1, turn. Dec over 1st two stitches (sts) and then SC in each to last 2 sts. Then Dec over last two sts.
Row 9, Ch 1, turn. SC in each.
Row 10, Ch 1, turn. Dec on ends if needed to get to 6 sts counting the ch 1. Work even on 2 rows for the flap.
Continue now with the original pattern to finish.

Here is a photo of the recycled plastic milk jug ring used just before adding it to the top of crocheted towel topper.