Keep them entertained interacting with the iPhone accelerometer
appfreak US write:
The idea is to stimulate the child taking advantage of the iPhone capabilities to wow the little ones. When you launch Awazdat, the app will display drawings of animals and objects that grow larger if you touch them. If you rotate the iPhone, the accelerometer knows that it has to keep the icons oriented. The best part, when you shake the device, it will recognize it, vibrate and change the colour of the background.
As simple as it is, it is handy to have just in case. It mimics the look of some preschool toys where the baby has to touch and react to changes. There is a free version with a Christmas theme, so there is no reason for not giving it a go. Awazdat is more amusing than what it looks to your adult eyes.