Water. So simple and natural element that we don't even bother to think about it. But when it's translated into a digital form it becomes something exceedingly beautiful. Perhaps the reason for that is the fact it's quite hard to simulate water realistically in real time. Whatever the reason is, here's one of the best water simulation apps for Android.
This live wallpaper comes with HD-graphics and it works beautifully with larger screens(tested with 10" tablet).