Covering plywood fire door?

[NickStone]

The first door you see on entering my new property is a plywood fire door to the garage. It's ugly, not so much because it's flat (and therefore a bit industrial) but because it's ply. No amount of paint seems to cover up ply so I'm looking to cover it with something else. In an old thread, Masona talked about covering an ugly plywood door with a self-adhesive skin (on the hall side) and I was wondering what this is and when I might get it? Or does anyone have any other ideas, please? Thanks a lot.