Visible crew/equipment: During the zero-gravity fight scene in the hotel room, it is possible to see a crew member's hand briefly resting against the end of the bed when Arthur and the projection are fighting on it.
Visible crew/equipment: Right before Cobb and Arthur go to the roof to find Saito having Nash in the Helicopter, Cobb and Arthur are in the Hotel Room with windows in the background. In the reflection of the windows, you can easily see the camera and the microphone.
Answer: The answer above is solid and I agree, but there's another plausible way of looking at it. It is implied at the end that Cobb could still be dreaming (we never see if the top stops spinning). If that's the case, then he would likely dream his children to be exactly how he remembers them.
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