This is not papier maché. This is a few shelves I inherited from friends I helped move. However as they neatly replace my jerry rigged project, I no longer need to do it so will not be papier machéing the boxes. We also were able to arrange a coffee table other than the boxes so I don’t have to do them either.
Now papier maché is something that I will probably revert to at some point as it is extremely useful for any kind of dry usage. Meanwhile, WikiHow has an excellent article.