It's a wheel winder. It was originally part of a failed attempt to make rubber band powered cars (i.e. horseless carriages.) A large rubber band stretched from the right rear wheel to the left rear wheel. You would have to connect the wheel wider to each wheel and wind the rubber band. Properly wound, a car could travel for almost a mile before needing to be rewound. It failed mostly because people were winding the wheels in opposite directions which resulted in the car spinning wildly on it's rear wheels. At that was the end for the Whirligig Motor Company.
this sounds like the dumbest idea ever. Can you imagine the mess you'd make if you hit a good pothole? Not to mention what would happen to the fish slamming into the sides of the tank while you drive. Ridiculous.
Time-y Wimey Tee, Large, Navy (naturally)
"Shirt Shirt", Large