Step 1: Wrap yarn around a small cup or can around 75 times. The more you wrap, the thicker your puff ball.
Step 2: Take the yarn off the can and tie around the middle to make a figure 8.
Step 3: Cut on both end of the figure eight.
Step 4: Fold over and trim to desired length.
Step 5: Tie to the top of the hat or other item.