Here's my 3 yrs old nephew with the SONY. His first attempt at photography and he loves it. He knows how to press the shutter, review photo, zoom in and out. Also taught him on the macro mode but that requires more practise.
He is pretty careful too, throughout the trip, he did not drop the camera, he also know how to shut off the power when he is not taking pics.
Here are some of his work. I just resized them that's all. Of course, he shoots in Program mode. LOL
The first shot.