They're handles from those stupid toys that were in all the 99 cent stores, convenience marts & Blockbusters a while back. The handle had batteries, a small motor, and maybe some lights inside. And there was a toy Batman//lollipop/bundle of fiberoptics/whatever on top. When the kid pressed the button/pulled the trigger, whatever was on top would rotate and any lights would light up.
I think this particular fad has died down, though- so finding them may take a little work.