airpot

A portable vacuum insulated hot beverage dispenser with a glass or stainless steel liner inside. Airpots can be filled with hot beverages such as tea and coffee and are used to keep beverages warm for several hours. Since airpots do not require electricity, they are easy to use outdoors or in temporary locations such as conference rooms and formal receptions.

It resembles a portable version of a water boiler, though it doesn't have the heating function it does.