DIY Bathtub Steam Boat Is Authentic Right Down to Putt-Putt SoundsRosa Golijan9/28/09 9:30pm44EditPromoteGo to permalinkForget remote controlled and Mr. T rubber duckies. Actually, forget rubber ducks altogether. What I want is some bubble bath and this DIY bathtub steam boat. Yes, it's a real, functional, bathtub-sized steamboat. And yes, it's complete with putt-putt sounds.