Truchet tiling is a staple of the shader community - https://www.shadertoy.com/results?query=Truchet

A particularly nice example - https://www.shadertoy.com/view/4td3zj

And a nice '3D' one - https://www.shadertoy.com/view/4lSBzm

They also come up a lot in pen plotter art.

Like the hexagonal one.