Mob Dropped Rares

General Rares

Item	Who Drops It?
Bear Mask	Tribals
Black Dye Tub	Ancient Lich, Lich
Blood Red Sandals	Blood Elemental, Demons
Bone Container	Tentacles
Charcoal Sandals	Ancient Lich, Lich Lord
Deer Mask	Tribals
Demon Bone Armor	Efreet
Decorative Suit of Golden Armor	Mushu (Destard 3 rare spawn)
Dirty Pan	Spider Queen
Dragon Bone Shard	Ancient Wyrm, Shadow Wyrm, Dragons, Drakes
Dragon Head (Brown and red)	Dragon Hunter, Wyrms, Dragons
Glacial Staff	Giant Ice Serpent, Ice Snake
Ice Staff	White Drake
Ice White Sandals	Balron
Ice White Sash	Balron
Intact Wyrm Heart	Ancient Wyrm, Shadow Wyrm
Mouldy Cheese	Undead Rat
Obsidian Statue Section	Pyroclastic Elemental
Orc Mask (Green)	Orcish Mage, Orc Dungeon Floor
Orc Mask (Shadow)	Orcish Mage
Picnic Basket	Solen Hive Monsters (Under Bucanneer's Den)
Pure White Bear Mask	Ice Fiend, White Wyrm
Raw Gun Powder	Pirates (Pirate City), Deceit Witches
Tribal Masks	Tribals
Troll Head Trophy	Troll
Volcanic Rock	Pyroclastic Elemental

Khaldun Rares

Item	Who Drops It?
Ancient Armor	Cultists of Khaldun
Chains	Slaves
Cultist Body Paint	Cultist of Khaldun
Bloody Bandage	Blood Demons, Undead Knight
Glowing Runes	All Khaldun Mobs, Gargoyle Alchemist
Red Spellbook	Khal'nga (Khaldun Bone Lord Boss)

Extras

Mob	Item
Any Monster	Small chance for +1 skill scroll
Any Monster/Animal	Small chance to drop a statue of itself
Paragon Monsters	Increased gold drop, as well as small chance to drop paragon chest with increased loot.

References

[http://uoforum.com/threads/rares-and-hunting-guide.31660/]

Events rare list: [http://www.uoforum.com/threads/event-rares-alltime-list.32044/#post-197494]