Okay, I can get you an Ymmu's paw, and let you use it...any character can use it, not just the Ninja...
Other good armor: Chain of Divinemail, Displacer Cloak, Jazeraint Skirt and Tunic (great for Valkyries), Silver Solleret (boots), Chamail Doublet and Pants +2 (?), Black Gown of Death (make sure you have a +regen item equipped!), Hi-Kane-Do (or whatever the really cool armor it is you get off the undead Gorn Samurai in the Isle of Crypts, Coif of Divinemail...
That's all I can remember off the top of my head at the moment.
-Sazerac