blanket melted the block of ice that encased the alien monster, releasing it. See also Bed warmer Heating pad Heated clothing Kotatsu, a Japanese item of furniture composed of a table with blankets warmed with an electric heater. Hot water bottle. This is a container filled with hot water in the evening to keep a bed warm overnight. References External links Safety information from the city of Fairfax, Virginia More Information Indian Type Electric Type electric blanket Detailed UK study on electric blanket safety (in Internet Archive) A 1998 CPSC document detailing differences in heating element construction between the US and European electric blankets Blankets American inventions Heating 20th-century inventions