The Oven

I don't have any reference photos right now, nothing right now is really going with the idea I want. I have 3 different ideas.
The first idea is having the oven in the basement hidden from view from the kids, but they can tell from the cracks in the floor that there is something down there.
Second idea is having the oven on the first floor at the back in the center of the kitchen, it will look like a regular oven till the witch turns it on.
The third idea is having a giant oven/machine that is very big with lots of pipes openings, just something scary big, in the same position as the second idea. In both second and third idea, the oven will be right across from the cages that Hansel and Grethel will be in.

The position of the oven, should be important, it symbolizes the heart of the witch and house so the oven will be located in the center of the house, I Hope.