This is a paper iPad template that I created for UI design. It includes keyboard graphics for landscape and portrait orientations, as well as a grid underlay that’s 10px per square.
The physical size might not quite jive with the real thing - the stated specs don’t quite add up. The screen size is based on Apple’s states pixels per inch and resolution, so that at least should be accurate, but the frame might not be.
If you’re a developer - get cracking laying out that killer app.
If you’re not a developer - well, I suppose you could print it out and tape it to a book and pretend you’ve got an iPad already.