You need more than one of any given Scroll Spell, which can be bought almost anywhere in Cyrodiil - Edgar's Discount Spells, 3 Brother's TradeGoods, Jensine's Quality Used Merchandise, Mystic Emporium, as well as found in dungeon loot.
Note you need at least 2 of the same Scroll, but there's no limit to how many you can use, though I would not recommend using more than 30 or 40 at a time as you may experience severe slowdown and could crash your game duping complex items such as Sigil Stones.
Ok, so once you have, say 10 of the exact same Scroll Spell (you'll see a number next to them, say for example Lake Stride 10. NOTE THIS IS ONLY AN EXAMPLE!!!! YOU DO NOT HAVE TO HAVE THIS EXACT SCROLL!!!!!)
In your Inventory, go to your Miscellaneous Items page under the Books heading (top set of listings, where you find the Books and such that you pick up) and find the Scroll Spell. This is your "Source" - this is what determines how many duplicates you make - the more of the one Scroll Spell you have (say, 10) the more duplicates of an item you will generate.
Click (A) on the Scroll Spell once, then find the item you want to duplicate and Drop it, then exit your inventory.
You should now see as many items that you dropped as there were Scroll Spells of the given "Source".
So if you had 10 Summon Zombie Scroll Spells, and one Grand Soul Gem, you would click once on the set of 10 Summon Zombie Scroll Spells in your inventory then Drop the one Grand Soul Gem and you would have 10 Grand Soul Gems.
Get on this fast, because Bethesda's already hard at work trying to cook up a patch for this, though I guarantee the patch will not fix the numerous bugs that are still in the game.
Also please note that Nirnroot cannot be duplicated this way either, nor can any Quest item that you cannot drop, because you simply cannot drop Quest-related items.
Thanks to whoever found this first over at the Bethesda Forums, and thanks to Cryo84R of the Xbox.com/Oblivion Forum for repeating it there (cuz I don't "do" the Bethesda forums LOL).
Permaquipping:
This is the act of permanently equipping an enchanted item to keep its affects without keeping the item, and only works on wearables such as rings, necklaces, clothing/armor, and shields.
What you will need:
One set of Scroll Spells in an amount of 10. You can also have another set of Spell Scrolls in an amount of 2, but I find it easier to just drop 8 Scrolls of the one set of 10.
Any enchanted wearable item that says "Constant Effect" such as Water Breathing, Detect Life, Fortify Magicka, etc.
First, you will have to clone the item if all you have is one of them. If you have two items with the same name and same effect and they show in your inventory as (example) "Ring Of Perfection (2)", then you can skip the Cloning part.
Part 1: Cloning the item: Equip your set of 2 Scroll Spells (or if all you have is one set of 10, Drop 8 of them), and click (A) ONCE on the Scrolls, then scroll to the item you want to permaquip and Drop it using the X button. Exit your inventory and pick up the two items that you dropped.
Part 2: Permaquipping the item: Equip one of the items you just cloned, click (A) once on the 10 Scrolls, then scroll to the UNEQUIPPED COPY of the item you are permaquipping and Drop it with the X button. Both items will disappear from your inventory. Exit your inventory and pick up the 10 items
This trick works with any enchanted wearable item as long as the enchanted wearable item is not stolen or in need of repair. If it has been stolen, sell it to a Thieve's Guild fence and buy it back, and it will no longer be considered stolen. If it is damaged (armor), repair it. Thus it can be cloned and permaquipped.
As well, Quest-related items like the boots of Springheel Jak cannot be cloned, but if you get arrested while wearing them and select Go To Jail, they are removed from your inventory but the effect stays with you.
Duping tidbits
Grand-level Grand Soul Gems that you find will all be Grand-level, but ones you fill yourself will be empty.
Grand-level Black Soul Gems still cannot be cloned this way.
Nirnroot still cannot be cloned this way
Post-Patch Glitching Update:
The Keep Bound Armor/Weapons glitch still works:
How To Keep Bound Armor and Weapons:
What you need:
Either a Bound Armor and/or Weapon Spell or one of those Green Runestones out in the Wilderness (they're spread out like Wayshrines) - those give you one Bound Weapon and one Bound Armor item no matter what level you are, and they are always Daedric in appearance. I'm not sure if they are levelled to you.
A Disintegrate Armor On Self Spell or a nearby enemy that will attack you and thereby damage the Bound Armor and/or Weapon. It's faster to find an enemy, it's safer to have the Spell. Buy any Corrode/Disintegrate/Damage Armor and/or Weapon On Touch or Target Spell that you have a high enough level to cast in order to have that spell listed in the Alter Of Spellmaking at the Arcane University, or at the Frostcrag Spire downloadable add-on.
Repair Hammers
Whichever method you choose to acquire the Bound item makes no difference in the results.
Let's assume for the sake of simplicity you have Bound Armor and Weapon Spells and the Disintegrate Armor/Weapon On Self Spell:
Cast a Spell for any Bound item, then while it is active, cast the Disintegrate (item) On Self Spell. Check your target item's condition in your inventory. Anything below 100 is good enough for the trick to work. Once the Bound Item shows any sign of damage, use a Repair Hammer on it to repair it to 100%, then Drop the item. Wait until the Spell wears off, or Cast a Dispel on yourself (or use a Dispel Potion) to end the Spell, then pick up the item.
Check the item's status and you'll see it is totally weightless. These items can also be enchanted and/or cloned.
By the way, and sorry for not stating this sooner, I am not claiming credit for finding these cheats, I'm just condensing and clarifying them. Kudos to those who did find them first.
Post-Patch Permaquipping:
This has been tested and confirmed to work after accepting the patch.
Permaquipping:
This is the act of permanently equipping an enchanted item to keep its affects without keeping the item, and only works on wearables such as rings, necklaces, clothing/armor, and shields.
What you will need:
One set of Scrolls in an amount of 10. You can also have another set of Scrolls in an amount of 2, but I find it easier to just drop 8 Scrolls of the one set of 10.
Any enchanted wearable item that says "Constant Effect" such as Water Breathing, Detect Life, Fortify Magicka, etc.
First, you will have to clone the item if all you have is one of them. If you have two items with the same name and same effect and they show in your inventory as (example) "Ring Of Perfection (2)", then you can skip the Cloning part.
Part 1: Cloning the item: Equip your set of 2 Scrolls (or if all you have is one set of 10, Drop 8 of them), and perform teh dupe trick explained above.
Part 2: Permaquipping the item: Equip one of the items you just cloned AND your set of 10 scrolls and then click the (A) button once on your set of 10 scrolls, then scroll to the UNEQUIPPED COPY of the item you are permaquipping and Drop it with the X button. Both items will disappear. Exit your inventory and pick up the 10 items
This trick works with any enchanted wearable item as long as the enchanted wearable item is not stolen or in need of repair. If it has been stolen, sell it to a Thieve's Guild fence and buy it back, and it will no longer be considered stolen. If it is damaged (armor), repair it. Thus it can be cloned and permaquipped.
As well, Quest-related items like the boots of Springheel Jak cannot be cloned, but if you get arrested while wearing them and select Go To Jail, they are removed from your inventory but the effect stays with you.
You can remove the patch at any time if you want to do the Money Glitches like Dorian (don't bother), the Kvatch Merchant (200 gold at a time only), or the Vampire Cure (level 30 gets 10K gold each time, minimum is 2500 gold).
Go to your system blade, select memory, and push the A button. Next, just highlight your hard drive or memory card (doesn't matter which) and press the Y button instead of A to view the device options.
While on the device options page, press the following sequence: X, X, Left Bumper, Right Bumper, X, X. If you mess up, just try again. If successful, you will see the following message appear: "This will perform maintenance on your Xbox 360 storage devices. Do you want to continue?" Select yes and press A.
After the cache is cleared, restart your 360 (normal restart).
If you do this it will remove the patch. You will get the option to download it again after you put the disc in.
Note this will remove all patches for all games, but not System updates. When you put any patched game back in, you will get the prompt to install the update again.
