I printed out one of the original Jerry Andrus dragons years ago, and I’ve had it sitting on my desk ever since.
A few things to note:
If you’re going to print this out, you’ll probably want a large-format printer. Doing it as a single sheet on 8.5x11 (or A4) will yield a pretty small dragon.
I printed it on card stock, because the neck-to-head piece is pretty flimsy. Even on card stock it’s kinda wobbly, so I ended up putting a brace behind the neck (a simple piece of card stock scored and folded into a triangle).
In person, your depth perception will prevent you from seeing the illusion, so it only works when you close or cover one eye. Cameras have no depth perception, so it always works on film.
That being said, I recommend it highly. It’s a very impressive illusion. My wife doesn’t like it, it creeps her out.