They are lights that were very popular in the 1950's , they were invited in the 20-30's i believe and here is a wiki about them.
Now wait a minute, Susie. Just because every child can't get his wish that doesn't mean there isn't a Santa Claus.
Bubble lights are very old-school. If you're not a fan of them, I can completely understand bubble lights going under your radar. I sometimes see them in well-stocked holiday sections but I'm a fan of all things "Christmas Electrics" so I'm likely to notice them. I think I've only seen them on a store display tree once, and even then I'm not so sure...
That's the thing about living in the US - we buy all sorts of junk. if it can be thought up, someone is selling it here. I'm sure I can find an Elvis-head Bubble light somewhere if I look hard enough!! Well, not sure about a James Brown bubble light, but definitely Elvis.
Check out this site. They are pretty reasonable. They kinda look cute.
http://www.christmaslightsetc.com/Ch...?CategoryID=39
LOVE LOVE LOVE the bubble lights!! Had them on the tree growing up!! I want some more!!
I have a small set I bought in the 80's and some of the lights no longer make bubbles so I am looking for a new set this year