Curves which procedurally fold out and open way automatically to a custom effector object, whatever you set up as such, driven by GeoNodes. 

This setup aims to be straightforward, compact and easy to read. More information and labeled node tree in the files.

Video demo here, here and here.

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NOTE

-(Since it is a concept demonstration, it is kept as simple as possible.) The GeoNodes trees are kept clean for easier readability and have detailed explanations. Everything is built from the base. The point of these setups is to provide a base core of the concept, node from node, instead of contracting all into node groups with exposed settings, which makes everything harder to read and dissect.

You can embellish, refine as you wish based on the core or realize your own ideas.

-Read the text description, it has a lot of useful info !