In 1900, Viennese surgical technician and tinkerer Erwin Perzy was asked to devise a way to increase light in operating rooms. He based his approach on water-filled globes used by cobblers for magnifiers. He didn't fulfill the original request, but he did hit on a good way to make snow globes, which his family is still making today.
https://www.smithsonianmag.com/innovation/how-an-experiment-to-amplify-light-in-hospital-operating-rooms-led-to-the-accidental-invention-of-the-snow-globe-180985742/
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