We gave Stanley a camera to use to prevent him from touching the 'good' cameras.
He seems to regard it both as a puzzle - if you press this button a thing comes out and it whirs - and a prop to play 'taking pictures' with, just like everybody else. He's seen people hold cameras to their eyes, so he holds the LCD to his eye to take a picture :-) He's still 2 though so we cut him quite a bit of slack.
Having said that: he did take all the pictures in the movie. The pictures are blurry because it's indoors and there isn't enough light.
October 9, 2010