I came across this amusing — and possibly gross — story of A. Muruganantham, christened India’s tampon king:

After a failed attempt with his wife and sisters and a cockeyed do-it-yourself effort with a football bladder full of goat’s blood, he’d finally hit upon a surefire way to test the low-cost sanitary napkin he was developing for India’s poor. He was passing out free pads to college girls and collecting their used napkins for study. And he had a storeroom full of them. When his mother saw it, she burst into tears and packed her things to move in with his sister.

Currently he is fighting an impending government subsidy to multi-national companies that manufacture sanitary napkins. Given how subsidies work, the government has no incentive to subsidize his product. But more power to him.