Sears Mail-Order Home From 1925 Was a Prefab Pioneer

An Early Crockpot

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prefabricated housing sears modern home sanibel photo crockpot
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Also in the neighbouring house was a Toledo Cooker, an early crockpot. It had a big cement disk that you heated up in your stove and then stuck in the bottom of an insulated box. According to an ad:

"Meats-even the cheapest cuts-have a new delicacy and richness, because they are cooked in their own juices....The scientifically arranged insulation prevents heat loss through compartment walls."

Image credit: Lloyd Alter