For a environnement project, I created a houdini book stacking generator. I made several try until I found a satisfying way to do it.
I'm using a for each loop . It runs on each primitive and it place them on top of each other according to the object bounding box. This way every object can have a custom scale/color/rotation.
You can also stack non-book objects ;)
I will continue pushing this tool further because it saves so much time !
Books from Megascan
Small Book from Agustín Hönnun, furniture from Ryan_Nein (on sketchfab)
Video showcasing the too parameters with some megascan and sketchfab books. You can also stack non-book objects.