Cracks can be laced up or used as doorways and windows. Indentations can be used as a place to inset a special stone or gem. Lumps and bumps can indicate facial features, animal horns, or distressed marks.
Severely damaged gourds can still be cut into bits to use for pendants, earrings, or parts to add on to other gourds as ears, beaks, or feet. Let your imagination roam free as to how best to use your 'character flaws'.