Cut a milk carton in half length-wise. Add a sail, balloon, rubber band or electric motor. See my "Wacky Water Fun" for ideas. Ed Sobey
Sound s kinda hard, but if you mean by wood then thats a lot easier then garbage try making one,,, start out with the middle then start building to bottom then the top pieces and connect sand it and then paint it I'm making one right now kinda easy but its going to take a while!good luck!!!!!!