Stash sorting! I am not embarrassed to admit that it was one of the most enjoyable evenings I've had in a long while. I dumped all the various boxes, baskets and bags onto a sheet on the living room floor and went to town. My! I own a bit of yarn!
I sorted by fibre; cotton, wool, and blends. Later talking to other knitters I heard of some who sort by colour and others by weight.
I've been buying quite a few sheet sets lately what with the move and two new beds. I kept the clear plastic bags they came in. You know the kind. Some have snaps. Some have zippers. Well, they are excellent yarn storage bags. Recycle baby!