I still have a melmac set from the 50's. I often thought to myself, if only those plates could talk. They're just a plain white with no pattern and the name "Brookville Modern Design" on the back. What makes them so special are all the knife marks, scratches, knicks, scrapes, etc. For some reason, I cannot part with them. I still associate each of those little marks with family meals when the kids were young. Crazy, huh?
Oh, and to your question. I worked with a gentleman who was a teacher and was a wiz at science. He had melmac plates that had the symbol of an atom on them. He loved to bring food into the teacher's lounge on those plates. All I could think of was an atom bomb!