DH's motto is "A place for everything, and everything in it's place." I joke that my motto is "Everything is someplace." He doesn't think it's funny ... which makes it even funnier to me!
I do find his motto is very helpful, though. When I decide to clean up the craftermath, it goes much more smoothly when I know exactly where everything goes. I try to do the craftermath control when I finish each project, but when I get more than one project going at a time, it can be chaotic.
I also try to keep fabrics together that I intend to make a quilt or something with, but often end up raiding it when I need something for my current project. It's okay, though, because those fabric collections are often ones I gathered up from the sale table.