Alternatively, apparently you can make a true vector display by steering a laser.

Here's a DIY example: https://www.youtube.com/watch?v=bdo3djJrw9o

I suppose you could even point that at a screen with phosphors on it for a more CRT-like effect. (Maybe you'd need a different kind of phosphor since you'd be exciting it with visible light rather than with an electron beam, though.)