However, if I duplicate the sphere, all the spheres will have the same colour and same wave texture (say, 2 of the blue spheres in the above image - but not, one whose wave texture is rotated - eg. the blue and yellow spheres have a wave texture that is slightly rotated).
I am able to have a different colour for the spheres (by using object info and color ramp), but I do not know how to have each sphere's wave texture have a different rotation.
Initially, I used randomize transform (specifically used a random rotation), but did not have any effect on the wave texture (the objects are rotated, but the wave texture isn't).
This does change the rotation of the wave texture, but I have to manually specify the rotation and each sphere needs a new material.
So how do I have a single material that has a random rotation on the wave texture?
EDIT: I tried to "group the above node tree, apply it on x and y values (just as above) then the output of that applied on the x and z and finally the y and z", but none of the combinations work as I would like. I have linked to a blend file containing my trial and errors