Who needs needles? WSJ's Rachel Dodes shows you how to arm knit: a fast and easy way to get a chunky hand-made scarf.

Use the Tunisian “knit” stitch. A good tutorial can be found here. Row 1: ch 15 for a narrow scarf, or 42 for wider “movie” size. Insert the hook into the 2nd ch from hook, yo, and pull ...