Thats fantastic JJ. Can you imagine finding that on the toy store shelves today?
One gadget that showed a similar disregard for the hazards of radiation was a
device they used to use in shoe stores. It consisted of an x-ray tube under a platform that you would stand on while wearing your new shoes. Above your feet was a fluorescent screen that would show a real-time x-ray image of your feet within your shoes, demonstrating how wonderfully they fit.
Of course once the x-rays had passed through your feet and the fluorescent screen they carried on straight into your eyes and brain, delivering a (un)healthy absorbed dose of ionising radiation!
Adam