It sounds like we've kind of decided that the [paper-craft] tag isn't particularly useful and more of a meta tag.
And in the meantime, there's actually a craft called papercraft--cutting and gluing paper into 3D models.
It's in very wide use in Japan, and you can find a bunch of corporate sites that have print-cut-fold-glue templates out there.
When I tried to edit the tags on a question to replace [paper-crafts] with [papercraft], I got the error message:
You are attempting to create the tag [papercraft]; however the tag [paper-crafts] already exists! If you think this new tag should be allowed, raise it on meta.
So. I'm raising it on meta. :D
My only problem is if a papercraft question comes up, the [papercrafts] tag still gets in the way. Can we at least edit it so it's not plural? Craft tags are singular. It's not origamis, watercolors, bookbindings, knittings, or paintings.