I occasionally experiment with shaders which don't alter a source image in any way but creates a complete new one.
Most of these ideas I get from shadertoy.com by either porting those shaders 1:1 or alter them in numerous ways. Here I'm gonna post some screenshots I've taken on a regular basis.
On request I can share those shaders belonging to the pictures but these will be most likely in a WIP phase so it's only from interest for other shader devs.
Click on the pictures in spoilers to see them in full size. Due to the physical limitations of my computer screen, Full HD is the maximum I can do.

the first one looks like Lissajous