Since waxed paper easily breaks down in the compost bin, I use it (and then compost it) often. Waxed paper wraps sandwiches and covers the tops of food in a pinch. So when I found waxed paper folded into bags I was happy as a freegan in a fresh dumpster.
The my mummy popped my bubble.
Apparently waxed paper bags have been around since somewhere in the vicinity of forever. Mummy's lunch included waxed paper bags back in the 1950's.