I used OpenMW-CS to create a simple mod that adds an NPC in Mababi called "The Immortal" which carries three unique enchanted items, an amulet, a robe, and boots.
For some reason The Immortal's legs were invisible, and I also couldn't figure out how to make the NPC equip the items. The robe was entirely black when I equipped it. The only thing that really worked were the enchantments.
I clearly need some more direction before I seriously try to make a mod.
I didn't find the right solution from the internet.
Transport Management Video