Final Fantasy 2
Weapon duplication:
Select "Item" and press A on an empty slot during a battle. Move up until the equipment in that characters left and right hands appears. Press A on the weapon to be duplicated. Press B and complete the battle or retreat. After the battle, equip that character with their weapon in the same hand it was in. The weapon should have a "2" next to it. Unequip, then re-equip the weapon. You should now have one copy of the weapon equipped and another one in inventory.
Information in this section was contributed by Aaron Haynes.
Duplicate 255 of a weapon or shield:
Equip Cecil with a bow and some arrows. Place the arrows in his good hand. Start a battle, and un-equip the arrows by selecting the arrows in his hand, then place them in a blank spot on the items list. Select the Avenger Sword, and equip it in the hand where the bow is located. Use Cecil to kill all the enemies. When the battle ends, enter the equip menu to find the Avenger Sword in Cecil's bad hand, and a number in Cecil's good hand. There will be nothing next to the number, as an invisible weapon is equipped. Un-equip the Avenger Sword, and equip the weapon or shield to be multiplied in Cecil's good hand (that currently has the number). After it is equipped it, a black spot next to a number will appear. Un-equip that object to create 255 of the weapon or shield that was placed in Cecil's hand.
A similar trick can also be used with Cid. Bersk Cid, or any character that can use a bow and arrows. Equip the bow and arrows. Make sure the wizard that is casting Bersk takes his or her turn immediately before the player with the bow and arrows. Time it so that the Bersk spell can be selected; and while waiting for the wizard to cast the spell, have the character with the bow and arrows select the "Item" sub-menu, and Un-equip the Arrows. Do not exit the items list. While in the items list, the wizard should be casting the Bersk spell. The character and the Arrows will get Bersked. The items list will disappear and the battle will continue. Fight or run away to end the battle. Then, enter the equip menu to find a number in the character's hand where the arrows were previously held. Un-equip the bow. Equip the weapon or shield to be multiplied in the hand containing the number. Keep equipping and un-equipping until a black box appears next to the weapon in the items list. That character now has 255 of that item to throw, equip, or sell.
Information in this section was contributed by Jesse Smith.
Hint: Kill Milon Z. easily:
Cast some Cure 4 spells on him or give him some elixirs to kill Milon Z. easily.