Stoneware foot warmers. These were filled with hot water and used as foot warmers before the invention of the rubber hot water bottle. When rubber bottles came in, people began to discard the stoneware ones. Ginger beer bottles, like the one shown, were also used as muff warmers, to warm people’s hands out in the fields. They could be filled with hot water and slipped inside the pocket of a large overcoat.
Footwarmers
Household