Papier-mâché is one of a handful of useful materials that have been almost completely usurped by plastic. I was surprised to find out that the panels for observatory domes used to be made from papier-mâché. This material is very strong and rigid when made correctly. My elementary school projects tended to be mushy and lopsided. It would be irresponsible of me to advise a novice to make a building or a sea faring craft. If you want to do something constructive with Papier-mâché, start by making masks for Halloween or Mardi Gras. Plastic Halloween masks are a pretty disposable commodity and there seems to be a serious over supply. I see Spiderman masks for sale in the dark alleys of the Kasbah and most people don’t celebrate Halloween or Carnival here.