The paper model of the Mac 128K reminds me... Paper models (cars, emergency vehicles) were one of the first things I made on that original Mac. (I might've made a fake newspaper first.)
I had a HyperCard stack of paper airplane designs that I must have printed hundreds of times. A cursory search didn’t turn it up and I have no idea where it came from. Maybe it’s lost to time.
This is probably not the one, but here is something I came across that seems a bit more limited and different from the thing you are describing.