You can quickly make a pirate ship that even floats out of one or more egg cartons. You will also need straws or wooden skewers for the masts and sheets of paper for the sails. You can paint and decorate both the egg carton and the leaves. You can also build a multi-storey ship from several egg cartons. A tip so that it lasts a long time when you actually sail it in the water: stick a piece of aluminium foil on the underside of the ship so that it also extends a bit over the sides.