In the movie Elf, at one scene an Etch a Sketch is shown with an amazingly accurate rendition of the Mona Lisa drawn on it. Of course, it's really hard to draw on an Etch a Sketch, so I was wondering if someone actually created it on an Etch a Sketch, or if it was made some other way.
There are some other screens with less impressive Etch a Sketch drawings that would still be hard to make, including some that appear to be made in real-time by the character Buddy. I'm interested in how this was done too but I specifically want to know about the Mona Lisa.