Thermos flask

Thermos flasks were containers used to hold both hot and cold beverages.

After the Siberian Controller knocked down the ice caves on Canthrop Minor, Iris Wildthyme persuaded him to buy a giant thermos flask. (PROSE: Modern Love)

Frank Openshaw drank coffee from a thermos flask while overseeing the excavations at Crediton Vale. (PROSE: I Am A Dalek)