A fully procedural unfolding spiral setup in GeoNodes.
Any custom (drawn or generated) curve can be folded up and unfolded into a spiral, can be shaped by Curve Radius, and textured as one, continuous spline.
It comes with the full setup with additional examples.
The setup is only one example of using this node tree, you can utilize your own custom curves, shape them and bevel them in the node setup to your desire, and apply your own material to it. (The generated UV Map is exposed to an Attribute, and accessible in the Shader Editor)
Happy Blending !