Sometimes the danger in the kitchen came from gadgets intended to be safer than the ones they replaced. Electric kettles are a particularly ironic example. Even as early as the 1920s they had automatic shut-offs intended to keep them from boiling dry, and some even had plugs that would pop out when the correct temperature was reached. However, the plugs could easily plop into a full sink of water if the kettle was on the drainboard (death to whoever was washing the dishes, sadly), and if the safety mechanism made it hard to put a popped plug back in, people would inquisitively shove knives and other metal objects in.

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