Start by wrapping the wool yarn around two fingers about 10 times
Then pull the yarn off your fingers and wrap across the middle of that about 10 more times.
Continue wrapping yarn around 7-10 times each time you change directions as you move around forming a ball.
Continue wrapping yarn around the ball in different directions (at least 7-10 times before moving to a new location) until the ball of yarn is about tennis ball sized.
Cut the yarn with about a six inch tail. Tuck the end under several of the layers of yarn.
Then push it as far inside the ball as you can. (You can use a blunt-tipped needle for this if you have one handy)
Repeat the above steps to make additional dryer balls.
Once you have all the dryer balls made, place them one at a time into one of the legs of the stockings. Tie off in between each ball so they are separated like one big yarn ball caterpillar.