Bind off ending row
With one loop on each peg, move loops from upper row to lower row. Knit off each peg so one loop remains on each lower peg. Cut yarn leaving a 12" (30.5 cm) tail. Thread tail onto yarn needle and draw through remaining loops. Gather tightly and fasten off.
Finish cast on row
Thread beginning tail onto yarn needle and draw through beginning stitches. Remove waste yarn. Gather tightly and fasten off.
Pompoms (make 2)
Wrap yarn around the 4" (10 cm) side of cardboard approximately 30 times. Thread yarn needle with 8" (20.5 cm) piece of yarn. Insert needle between cardboard and yarn wraps at top edge. Tie yarn tightly around all wraps. Cut wraps at opposite edge to form pompom. Shake pompom to distribute yarn evenly. Trim ends as needed.
Securely attach a pompom to each end of scarf. Weave in tails.