I picked these up years ago at a retired teacher's garage sale. My kids were small then, and I had the idea to laminate them to use as placemats. Cool, right? But, I stashed them away and didn't run across them again until the kids were in high school. So, maybe you can take that idea and run with it, or make a HUGE mixed media scrapbook, or whatever else your creative mind comes up with.
These are sets of 10 double sided, giant classroom flashcards (c)1981. Each measures 12" x 18" with rounded corners and they are in good vintage condition. They are a random selection, but the lot you choose will include the cards shown in the corresponding picture.