A newly revealed Apple patent has an interesting take on the Magic Mouse: the patent shows a display embedded in its touch surface, creating sort of a mini iPod touch-style interface. It's not clear just how much processing power the display-enabled mouse itself would have, but uses mentioned in the patent seem to involve the display working in conjunction with actual Mac apps, like showing a calculator when using the Numbers app on your Mac, or a magnification of text when using Pages.
There is an actual processor listed in the patent, so the Mouse would have some capability of its own to run integrated apps. You may be able to set up parts of the touch display surface to
