Check out this cool Japanese slit animation

Slit animation, also called moire animation or scanimation, tricks our brains into perceiving motion because of gestalt laws of perceptual organization. Here is an example of falling petals and a scene from the 2004 manga Mai-chan's Daily Life.

That channel has a few other examples from slitanimation.com and other free resources.

Image: YouTube / スリットアニメーション