This is a simple shader node group that breaks up the visual repetition of tiled textures. It uses a Voronoi texture's cell colors to apply a random translation and/or rotation to an image texture's vector input to produce an irregular pattern.
I primarily made it for landscape materials. The cells' borders are still sharp, so certain materials, like bricks, wood, or fabric, will not look good.
This is a super handy little group. Thanks for sharing!