How about the invention of tampons? It goes back to ancient Greece. I feel sorry for the girls that were "pre-ancient Greece".
Have you seen that "Naked and Afraid" show? Tampons are one of the only things they are allowed to have. Can you imagine being there with a strange man and being on your period nekkid? Good lord I'd just run and hide.
“You are imperfect, permanently and inevitably flawed. And you are beautiful.”