UAL London School of Fashion millinery blocks: http://www.arts.ac.uk/fashion/courses/short-courses/browse-short-courses/by-subject/millinery/millinery-workshop/
I am starting work on a set of three-dimensional objects. These millinery blocks (above) are beautiful forms, carrying a long memory of hats-for-heads. Visually they could be a slice taken from the end of a core sample (below).
These core samples (above) look like strips of watercolour or aquatint. Either or both approaches are worth exploring.