Synchro Noise

Collection of films that present a strong or in depth portrayal in less than 2 minutes. These films might be short but they are able to leave a lasting impression even compared to some full length series.

Part 1 - https://myanimelist.net/stacks/9287
Part 2 - https://myanimelist.net/stacks/9289

SEIZURE WARNING FOR ALL OF THEM.

These shorts have literally nothing, except flashing images and/or fast-shifting shapes.

Requisites:
NO PLOT AT ALL. (Shorts like Adventures in Beauty Wonderland wouldn't count as it has something that can be considered a plot or at least a story.)
Might contain a high content of flashing images.

No characters at all nor something that could be remotely called one here.
Most of them are music videos and/or avant-garde shorts.
And four of these are just cubes moving.

Shorts with a duration of 19 seconds or less. (Not enough for most commercials)

animes that last a minute or less