I saw on another site a weasel ball decoy so I tore apart a weasel ball the other day and decided to make a decoy out of the internal workings. Basically I took the top off, removed the weight attached to the motor, drilled a 1/8" hole in the bottom, installed a 1/8" rod and epoxied it in, paint and attach the decoy.
Click for video
Sorry for the poor pic quality, I will take some better field pictures in the morning.