If I could I would like to make an early game suggestion for a couple of useful but non-op items:
Obsidian: would have to be a new resources, maybe found in the burnt forest.
Obsidian knives: a simple knife that causes bleeding and has badish durability.
Obsidian arrows: arrows that cause bleeding
Glass knife: a very crude shank like weapon made of scrap glass. They are very sharp but break easily.
Glass arrows: just an alternative to stone.
Birch glue: made from birch sap, just as a alternative for glue. Could be used in new arrow or knife recipes "url its used to attach stone arrowheads to wood"
Pine sap: used irl as an antiseptic, fuel source, and to make soap, overall a useful resource.
Firelance: a crude "firearm" that consists of a hollow tube packed with gunpowder and small rocks, nails, glass, or lead shot.
Not so primitive suggestions:
Blackpowder harpoon gun: essentially blackpowder arrow gun, uses bow ans arrow skill.
Bangstick (also called a power head): a more civilized version of the fire lance which is essentially a modified spear designed to kill large gane/zombies. Essential a high damage melee weapon that you reload
Airbow: a crossbow equivalent of the compound bow that uses compressed air.