I love the convenience of a center-pull ball of yarn as you're knitting or crocheting, but don't have a handy-dandy ball winder to make that happen. So, I use this simple method to wind up my yarn by hand.
Step 1: Gather your materials.
Gather your materials. With this method, all you need is the yarn you want to wind up and some kind of rod or stick. I have a short wooden dowel rod that I use, but knitting needles work great too.