Ebony Mail- Become Patriarch of the Temple

Adimantium Armor- Either kill Apelles Matius for a set or go down to old Mournhold, on the wall may be some raw adimantium. The blacksmith at craftsmen's hall can make it into armor.

Mountain Spirit- Get it from killing a man at the Erabenimsum Camp for the main quest.

Helm of Bear Scent- Found in Eddard Barrow, in a chest, near the north end of Brodir Grove, Solstehim.

Helm of Bearkind- Kill the Berserker Denmother in a cave on Solstheim.