Elder Scrolls 4, The: Shivering Isles Cheats (PC)

At the southern most point of the Shivering Isles, south of Madgod's Beet, is a cave
called Corpserot Prison. Inside at the very beginning of the cave is the Evidence chest.
It is in both Mania and Dementia. Note: On your map, Corpserot Prison is called
Corpserot Passage.

Duplicate the item you want to permanently enchant yourself with. You must have two of
them. Equip one of the items, then proceed with the normal duplication trick, but drop
the unequipped item and you will notice that both of them drop. You will not be able to
re-equip that item again, but the effect it granted will now be permanent.

Go to the inventory screen and equip any Scroll that you have multiple copies of (for
example, five Superior Convalescence). Once the Scrolls have been equipped, press [Space]
again while still in the inventory screen. Then, drop the item you want to duplicate (for
example, Grand Soul Gem). You will now have the same number of that item as you do
Scrolls. Note: You must have less items than Scrolls or this trick will not work.