Ah, so tacky. But interesting. It reminds of something I thought of that I'd patent if I believed that no one had thought of it prior to me, but I don't.

It occured to me that a spinning object—I had thought of simply a bar rotating about its mid-point—used as a display device has a resolution in the direction of rotation limited only by the rotational velocity and the precision of a mechanism controlling the display elements. Because, after all, the display element itself is analog in the direction of rotation. The circuit controlling it probably would not be; but that only that portion would be digital would make any arbitrary resolution (in the direction of rotation) theoretically simple.

I hadn't thought a three-spoked cylinder, but given human color vision, you could use this design to create "accurate" color images. Also only limited by the speed of rotation and the precision of the control mechanism.

The problem, though, is obviously the relatively severely restricted resolution along the radius. But it seems to me that if the resolution elements were in staggered formation (not all along the same circles, but each different) then you could trade some rotational resolution for a gain in radial. And, given the rotational resolution is still only limited by the speed of rotation, you theoretically could regain the resolution you've lost—thus opening the radial resolution to arbitrary precision. I'm not certain of that, though.

But it'd be really pretty if it were a spinning rod that would seem to create a display out of thin air.

Holy shit! I'd get customizable versions for my shitmobile just to poke fun at people.

I agree re: sciurus.
Some of the comments in that link make me really sad.