To summarize before we start (I know you methodical NASA types!) we’re going to create a new folder for the images, do a Google image search to find photos that are the exact size of your screen, then save them, one-by-one, into the folder. Really interesting question, actually, because it’s spurred me to think about the most efficient way to accomplish what you seek and to realize that while it’s easy, there are a bunch of steps involved to accomplish what you seek.
