Toy ovens (also toy stoves, miniature ovens, or simply mini ovens) are cast-iron, steel, or plastic small scale functioning ovens designed for children to cook miniature baked foodstuffs. A toy oven can be fuelled from a range of sources, including coal, wood, gas, or electricity. Early models of this type of toy were first introduced in the late 1800s. However, these were replaced with gas and electric versions of the toy in the 1920s to 1950s. Popular manufacturers of these toys include Lionel, Hubley Manufacturing Company, Kenton Hardware Company, Kenner, and Hasbro.