Daedric Artifact Staff of Sheogorath. I recommend the staff to have no enchantment (like volendrung and Auriels bow) so that high level characters have something to enchant. Also wabbajacks lore enchantment would be impossible to make in vanilla morrowinds engine.
I am planning make a quest to retrieve the staff from Veranzaris, a Daedric ruin in Roth-Roryn. The shrine is dedicated to Sheogorath, and even has a manic Library in the ruins with several copies of "Wabbajack", the book within it.
A Daedric Staff artifact belonging to the Daedric Prince Vearmina. Maybe having a presence in the Grey Meadows would be fitting for the Prince of Nightmares.
A Light Armor Cuirass Artifact. It can hide the player through Chameleon Magic. Maybe an award from the Thieves Guild? Too many new items in Old Ebonheart, maybe a different Guild Hall like Baan Malur? (if there will be one).
Daedric Artifact Staff that belongs to the Daedric Prince Sanguine. He has some form of presence on Morrowind through the Morag Tong. Would be an award either through the mainland Morag Tong or a Daedric Quest for Sanguine. Would be cool if it was found sprouted amoungst some roses in some kind of Daedric Sanctuary. Summons a Dremora for 120 secs.
Thinking that maybe a Worshipper works at the Narusa Winery (considering this princes realm is Debatchery)
A Daedric Battle-axe artifact that belongs to Clavicus Vile. The Axe originally appears in Skyrim.
(2019-02-05) Added another version of the Axe made by PikachunoTM. This one is much better and think it should be reviewed. Kept the Original file just in case it is needed.