A very popular design i shared once..
Organic Volume-Voronoi cells inside an epic bust.
Free to download and 3d print with your favorite material or on your home 3D Printer.
See more examples of this design technique:
3D-Voronoi Vase - Math Decor by Dizingof:
3D Voronoi Deer - by Dizingof:
3D Voronoi Unicorn - by Dizingof: