Post by Nyan.
Rocks and minerals, stone, metals, ceramic, glass
Plants (wood, paper, textile)
Animals (plastic, animal part)
Some materials contain both organic and inorganic components
Ivory, bone, when fresh a combination of inorganic material and protein
Burned wood, if not completely burned, will have a small amount of the original organic component (wood) plus a component that is now mostly inorganic (carbon only)