For me, a scrap is anything that is left over from another project, and I don't foresee using it in another project. Often that's 1/2 yard or less, but sometimes is larger cuts. I have a 3 yard scrap right now, because I bought it for a project, but changed my mind, and I doubt I will use it in something else, so I am willing to cut it up for scrap projects. Otherwise, my heirs will be giving it away when I die, because it won't get used.