How are hidden cameras disguised in reality shows?

How are hidden cameras disguised in reality shows?

I don't really know that cameras are disguised on reality shows. People are generally aware of fixed cameras in a bedroom or in hallways, or stuff like that. If people can forget that there's a three man crew and a producer standing two inches from their nose filming them, if they can forget about the camera in that situation, they're certainly going to start forgetting about the fact that there's a camera in the hallway, in the ceiling, or in a bedroom. I just think they tend to forget about them on reality shows, or they just know cameras are there but they stop caring.