Tyler's camera is a Polaroid i531. Very kid friendly, easy to use and hold, with 5.1 MP camera and video. Tyler has learned pretty quickly how to use it.
Ellie's camera is Fisher - Price Kids Tough camera. While the resolution is not nearly as crisp (640 x 480), the camera is great for 2 - 4 year olds. Easy to hold, both LED and view finder, it is a great camera for her. The last photo gives you an idea of the range of output.