the mystery of the electric ladybug

Here are your clues:

Clue #1: It's a metal ladybug. It's heavy. 6" long, 5" wide, 3" high.

It has a cord. A really short cord. 6" long. When you plug it in...

...that metal circle with a square-shaped hole in it spins slowwwwwly while making a nice quiet grinding hum. Like something else would attach to it and turn? (So, there's a motor inside.)
See those metal things on either side that make it seem like it would slide onto something?

Electrohome Limited, Kitchener, Ontario, Canada 1976
Do Not Expose To Rain (Ne Pas Exposer A La Pluie)
Researched the company and Electrohome made crazy funky TV/Stereo consoles in the 1950s and 60s , among other things, and then started making outdoor accessories later.
Oh, also says "Made in Korea" under that bottom emblem.

And that's what I know about this Electric Ladybug.

So, whaddya think? Anyone? Someone out there knows EXACTLY what this baby is, and I want to know!! Help a girl out and let me know, ask around, share the photo, whatever it takes.
~ Jenny