Got some item ideas 
Bandage cures bleed and heals 4% of your max health. 
Balm Cures paralyse
Antidote cures poisoning
Aura stone Could be used to enchant elemental effects 
Ingredients for potion to give to a alchemist 

Seer stones (like ingame messaging but with a item quite rare)
The metals could come in varying amounts
Items that have magical properties could be givin to a mage or sorcerer for research to fiqure out what they do
(is pvp allowed)
Their is also smokebombs which decrease accreacy 
Makeshift flashbangs that do the same

Other ideas ill post later