Scrappy
I have a LOT of scraps in different sizes. My only rule is to try not to have the exact same piece right next to each other, but it has happened before. If that does happen, I try not to get bent out of shape about it. After all, either I'm not in the room with it, or, if I am, my eyes are closed and I won't see it anyway. If I give it away, I still don't stress over it, because after all, I'm not perfect. I tend to just use whatever comes up and don't worry if the color/design don't match. The "old-timers" used what they had available, and so do I.