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The Twelve South HoverBar (shown behind the laptop) looks very versatile and has good potential as an iPad scanning stand. The gooseneck arm is 22" - plenty long enough to adjust to the right height.
As a former illustrator/fine artist, something like this which brings the promise of mobile, digital sketch-booking and painting to reality, really appeals to me. PLUS I've been eyeing tablets (like the iPad) and looking for a good reason to jump in...