Articles made of non-metallic materials for anchoring and fixing; articles made of non-metallic materials for support; articles made of non-metallic materials for marking out land; non-metallic tree supports; tree and plant shelters, supports and protectors, not of metal; goods (not included in other classes) of wood, cork, reed, cane, wicker, horn, bone, ivory, whalebone, shell, amber, mother-of-pearl, meerschaum and substitutes for all these materials, or of plastics