I have been using my leftover sock yarn to knit tiny socks as Christmas tree ornaments or package decorations. They also sell well at bazaars and craft shows. The pattern is quick and easy.
Cast on 20 st, leaving a long tail to crochet into a loop later. Divide 6,6,8 on three size 0 DP bamboo needles. Do K1, P1 ribbing for 4 rows, or just knit all stitches for a rolled cuff. When the cuff is 1.5 inches, divide for heel, 5, 5, 10 st on 3 needles. On the 10 stitches, knit a heel flap 10 rows long (5 long stitches). Turn heel as follows: on inside, slip 1 st, P4, P2 tog, P1. Turn. Sl 1, K2, K 2 tog, K1. Turn. Sl 1, P to last 2 st, P2 tog. Turn. Sl 1, K to last 2 st, K1 tog. Pick up and knit 6 st along heel flap. K across instep, combining the two needles with 5 st each onto one needle. Pick up and knit 6 st along the other side of the heel flap and K3 st from the heel needle. This will leave you in the middle of the heel on the bottom of the foot. Knit one row around. Decrease 1 stitch at the top of each heel needle every other row until there are 5 st left on each heel needle. Knit every row until the foot is the right length, usually 4-5 rows. Decrease for the toe, 4 st every other row, until 8 st are left. Finish the toe with the Kitchener stitch. The finished socks fit great on my cat Gracie, but she won't stand still long enough to let me take a photo.
Happy Holidays to all!