These were just tossed into the box- I am not even sure if they are related, but each has something interesting about it, so I figured I would scan it to show you. I am going to file these three under "mystery items" and I will revisit them if I can find their instructions.
The first card only caught my eye because it has the little pinhole punched into it. The second has that exact pattern on both sides. The red & blue reminds me of retro 3-D printing, so maybe I will try to find some old glasses and see if anything jumps out at me. The 6 of diamonds has that interesting hole on the side, but does not have the same back-cover graphic as the 5 of clubs, so I do not think they are related.