You could make them just buy grabbing two pairs of 3D glasses and popping and popping the lenses out and making one pair with two right eyes and one pair with two left eyes, right? Or am I over simplifying it?
If I am not mistaken, then the hardest part would be modifying the lenses so that they fit the opposite eye in the frame.
Still, seems kind of silly to have to wear a pair of stupid glasses just to watch a movie.