Cornucopia Design

This is a design principle based on a cornucopia shape - so that materials can be designed so that, rather than either having a consistent density or an articulated structure (being composed of a hard "bone" structure, flexible "skin" structure and a connective "muscle" structure), materials can instead be designed based on a density-faded principle where rigidity is mapped into a cornucopaic "filling" of the area of an object and flexibility surrounds the rigidity incrementally through the use of graduated spacing of pixles as printed on a 3d printer. So instead of bones and skin you would have bones fading into skin with no hinge. Graduated density fading. And so I imagine that the most flexible and strong shape that you could map into an object would be a single coil möbius spring - the closest approximation to infinitely mixable fluid dynamic motion. So spring things.