Knitted fabrics like a scarf or socks are highly elastic, capable of stretching as much as twice their length, but individual strands of yarn hardly stretch at all. It’s the way those strands form an ...
Click on the thumbnail for a full-sized picture. Make 18 sts in each of the two colours for the bookscarf (36 sts total), alternating the colours with every stitch. Any two-colour cast-on will do.