@murph The latter. Suppose I empty out a pinball machine chassis, removing the pinball playing surface and the glass.
Then I would remove the exterior (other than the top and the door) of a small oven, and install it in the pinball machine chassis.
Perhaps instead of an oven, I should use a small microwave oven and some electric range burners on top.
Now I can cook dinner accompanied by the sound effects & lights of The Addams Family, Elvira, KISS, or whichever machine I can find.
@matt I'm no expert, but it sounds like the microwave idea might work, but ovens or burners sounds like a recipe for disaster in a device not designed to withstand heat. (And probably old and made largely of wood besides)