How quickly we forget the past. I inherited one of these from my grandfather, who while having none of his original teeth still flossed religiously (usually in church).

This is a "Repunzel" dental floss dispenser (disposable version). It used finely spun human hair, or golden spun straw (Rumpelstiltskin version). I believe the latter could be refilled, but only after promising your first born (not a bad deal back then).

Personally, I prefer the more modern dental tape dispensers as pockets have decreased in size over the decades.

Anyway, mystery solved... where do I get my t-shirt?