Arrow Duplication Trick
To duplicate arrows you must have at least 6 of them. However, 5 or less may be re-used, again and again, by following the same process listed below.
You'll need arrows (6 or more), a bow, and a sword (or, other non-marksman weapon).
1.Enter the inventory menu.
2.Equip the arrows to be duplicated, and the sword.
3.Shift the inventory display to "Misc." using the tab at the top of the inventory menu.
4.Exit the inventory menu.
5.Hold down the X button, then pull the R or L trigger to select the bow.
6.Enter inventory menu to make sure that the sword is still showing as equipped in the character image (Otherwise, it won't work, and you must redo steps 1 through 5).
7.Exit the inventory menu.
8.You may now shoot the creature/victim(s), and you may shoot up to as many arrows as you have equipped in your inventory, without actually using them.
9.When you have finished shooting, switch your inventory menu display back to "All", and drop all of the arrows (that still show up as being in your inventory) on the ground.
10.Dispose of the dead creature/victim's corpse(s).
Notice that there are new arrows in your inventory now!
Pick up all of the other arrows that you dropped on the ground.
11.Un-equip bow, and repeat process.
I don't have time just yet to attempt this, but can anyone verify this one? Does it work with Daedric arrows (I'm sure that it would, though)?