And yet another post that makes me think about what I actually do. Thanks for that. I sort primarily by color BUT I separate flannels, juveniles, panels, some novelties in their own little categories and when I find fabrics that just need to be together in a quilt, I will match them up and keep them (in baskets) ready for a moment of inspiration. I guess you need to think about what you go looking for when you have a new quilt in mind and sort accordingly.