The Noma Bubblelights he showed were just like the ones we had when I was little!!!Loved those things-better than TV!Liked to watch them bubble.The package  was worn adn torn-but the ones the fellow showed were it!Would like a set of those today.

I buy bubble lights from my local Five and Dime store and screw them into night lights.  They look really cool over the kitchen counter or acting as a guide light in a dark hallway.  I've seen a broken bubble light and it looks like there is a tiny automotive style light bulb with a C-shaped filament.  There is a glass incandescent bulb within the plastic base.