Go to Dunroot Burrow and find the slabs of stone on a hilltop. On those slabs of stone is a dead person, with a Potion of Nighteye nearby, some skeletons, and a note. The note is called "Death Decree". Pick it up and read it. It says that a man named "Robert Wisnewski" was sentenced to death by Sheogorath. Robert Wisnewski is on the Bethesda staff list. He was sentenced to death for trying to grow a beard (you cannot have a beard except for Sheogorath in Elder Scrolls).
Duplicate the item you want to permanently enchant yourself with. You will need two of them. Equip one of the items. Proceed with the normal duplication glitch, 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 is now permanent.
In Knotbone Chamber, go north of the Gates of Madness, and outside the fringe to find a man named Thaelius. Thaelius has no dialogue. When you talk to him, the only text that appears is "NO DIALOGUE". He is just a regular NPC in every other way however. He has a journal in his possession talking about his alchemical exploits, and how they drove his girlfriend away from him.
After completing the main quest, talk to haskill about defending the realm. He will tell you about a settlement being attacked by some creatures. Choose to take care of it yourself. Defeat all of the creatures and you will receive message saying that all of the creatures are dead. Fast travel back to the new sheoth palace and speak to haskill again about defending the realm. He tells you that the towns people are thankful and have given you a gift. If you kill the creatures alone, you will get 1000 gold per save, and if you send the army and then help, you will only get 500 gold. Repeat as desired to gain unlimited amounts of gold. Note: If haskill says there is peace in the realm, just ask him again until he tells you about another attack.