What a fantastic use for a cardboard box! All boys should have their own fire engine, and if they help to make it they will enjoy playing with it even more.
A long cardboard box painted red makes a perfect fire engine (we used the box from a multipack of soft drink cans). We decorated ours by gluing drinking straws to the top to make the siren and a ladder.
Black card rectangles were glued on for the windows and front bumper, with black circles for the wheels and orange ones for the headlights. Silver rectangles were glued to each side to be the doors of the storage lockers. We cut out the letters to spell fire in white card and glued them backwards to the front of the engine. Finally we used a black pen to draw on the doors and the slats on the locker doors.