While this sounds today like it might not be the safest idea in toys, this item which was found on the inside back pages of comics from 1940 to 43 is really mostly safe.
They can still be bought today but they now use americium or thorium.
I just found one of these last night in my junk cupboard! Gave it to my kid who was suitably impressed.
I have this! It’s cute :)
I have been drooling over these gals for the last couple years. Designed by the amazing Camille Rose Garcia, I first saw these in a specialty shop in 2006.
Finally I have decided to get Lulu and Katie & Sadie. :)