More passively/aggressively obtained armor/weapons

There are already items like the trident and the turtle helmet.

It would be very possible for there to be a pair of bat ears the allow you to use echolocation (perhaps even interact with the warden and skulk sensors) and to locate mobs within your sight. It would make sense as well if the ears were crafted with the item the warden drops. 

A weapon that could be obtained is another weapon from parts of real world history like the trident. There could be a macuahuitl (an Aztec obsidian sword), a Roman Gladius, or a katana. Each weapon has its history, and the legends they show up in could dictate their enchantments.