We loved our mac plus and we loved making animations with HyperCard. We would draw on the cards and then animate the drawings. Then if you run the command "Show all cards", you can watch the animation run. It was a lot of fun.
I've got several hypercard movies that are now "Unix Executable Files" and I put them on my mac plus but it doesn't recognize them anymore - a symptom of all the upgrades our computers have been through. However, I recorded these movies back when HyperCard still ran on our PowerPC mac and you can still watch them. I'm glad they got rescued. Hope you enjoy!