How many "wads" of yarn does a sane person hand wind before a swift and ball winder become a necessity? Most of the yarn that I have purchased to this point has been in lovely pre-wound skeins -- but I have recently become the owner of some lovely hand dyed yarns. It's so much yummier to knit with, but must first be wound into usable balls.
Winding yarn into a ball involves finding something or someone to hold the yarn while I wind it into a ball. My children's wooden rocking chair has "hands" that I can use, but it is still a very time consuming process. And, rolling a center pull ball is never a pretty process.
I've still got two more skeins to wind, but if I get anymore, a swift and ball winder may just become the perfect anniversary (or mother's day, or happy festivus) present.