Found this super cheap fisheye on Amazon that fits perfect on the fd73. The optical quality is bad, but at 0.3 MP, you can sorta get away with it. Also, if you separate the lens, you can attempt macro shots or do cool abstract out of focus shots. Only actually...

An original, un-changed f.y.e. as it currently sits in the Millcreek Mall in Erie, Pennsylvania. Located adjacent to the food court, it has this neat canted double entrance. Which hosts two signs above it!