Really like the dynamic sculpture idea. It reminds me a bit of something I saw at the BMW museum - https://www.youtube.com/watch?v=7OW5y4NqXCo
The light material reminds me of a large scale “3D printer” idea I proposed almost 30 years ago using foam and a hot wire cutter with angle control in addition to moving material in x and the wire in y. The idea was to make large 3D objects from CAD for fiberglass molding etc - but at the time I had no clue how to get such a project funded. Now I think there are large CNC routers that would just mill the whole thing from a large block of foam.
I agree that the wooden sculpture will be heavy and need attention to mounting detail, but should be lighter than the marble slab beside it.
I have managed to model a quick version of this by creating the first “template board”, adding a curve for a y direction path, and then using Pattern along a Path. There are some complications to trimming the full assembly and creating a rendering, but I’m working through those. Once I have the process sorted out, then I can adjust the parametric model to add items like the variable amplitude of the waves etc. At this point, I’m trying to build a Proof of Concept model.