Someone has to get the ball rolling on wanted items, and from what I can gather this is the place. Also note this list is subject change and I don't anticipate getting all items here (obviously).

Single Items (Abyssean):

• Ocelot Trousers (Usurper)
• Twilight Mail (Shinryu)
• Unkai Sugemino (Ironclad Pulverizer)
• Zelus Tiara (Pantokrator)

Single Items (HNM/VNM):

• Blobnag Ring (Blobdingnag)
• Defending Ring (King Behemoth)
• Strigoi Ring (Lord Ruthven)

Upgrade Materials:

• Creed Seal: Feet [x8] (Iktomi/Kadraeth/Pascerpot)
• Card of Voyage [x6]
• Coin of Balance [x12]
• Coin of Voyage [x1]
• Jewel of Voyage [x6]
• Jewel of Wieldance [x3]
• Stone of Vision [x6]

WS Empyrean Materials (Armageddon):

• Isgebind's Heart [x31] (Isgebind)

Non-WS Empyrean Materials (Kannagi):

• Helm of Briareus [x36] (Briareus)
• Sobek's Skin [x50] (Sobek)

List Updated 4/18/12