Originally Posted by
Kerath
Weaponsmithing = Swords, greatswords, hammers, maces, shields, tridents, spears, axes, daggers (foci?)
Huntsman= Rifles, pistols, longbows, shortbows, torches, spearguns, warhorns.
Leatherworking = medium armour, leather pouches
Tailoring = Light armour, cloth bags
Armoursmithing = heavy armour, metal boxes.
Jewelcrafting = amulets, accessories, earrings, rings and the like. Gems can also be used in the upgrade slots on regular armour.
Chef = food and dyes (as far as I know, don't have a chef yet myself).
Artificer = Staves, tridents, scepters, and foci.