Keepsake key

The keepsake key is a consumable item purchased from Solomon's General Store that converts a wearable item into a cosmetic override. In other words, the player appears to be wearing that equipment no matter what he/she is wearing, and the appearance bears no bonuses or benefits whatsoever. The cost per keepsake is reduced significantly when purchasing the 3 or 6 pack. Upon logging back into the game from purchasing a key from Solomon's General Store, the game info displays "Your purchased Keepsake Key has been added to your bank."

Most unlent items equippable in the head, cape, neck, body, legs, gloves, main hand, off-hand, or boots slots can be used with the key as long as the player has the requirements to wear it. Once an item is used on a key, the key disappears, and if the player wishes to replace a slot, they must purchase another key. You must use the item on the key, using the key on the item triggers the "Nothing interesting happens." message.

To activate the cosmetic override, a player must open the equipment interface and select the 'Customisation' option. Under the 'Keepsake Box' category, players can choose the desired Cosmetic armour to override their current appearance by highlighting the desired options. A player can switch between equipment wielded, and the cosmetic override does not change or have to be re-established again. A player can also wield nothing, and the cosmetic override still shows.

Limits

 * Items that degrade (such as Eastern armour, Ancient Warrior's armour, corrupt dragon armour, etc.) do not degrade while in the Keepsake Box.
 * The keepsake key can be brought into the dungeons of Daemonheim and be used to wear dungeoneering equipment as a skin outside of Daemonheim. One cannot however, add items that have been bound in Dungeoneering to the keepsake boxes. The message "This item cannot currently be placed in the Keepsake Box" appears upon attempting it.
 * If players attempt to convert an item they do not have the proper level(s), quests completed, or other requirements to equip, they are not able to put the item in the box. Attempting to do so returns with a message stating that the player does not have the requirements to equip the item.
 * As with other Solomon's Store skins, the cosmetic override of the keepsake key does not display in PvP areas.
 * Certain quest items cannot be placed inside of the box, such as Glarial's amulet.
 * Members items cannot be put in the keepsake boxes on free worlds. But Members items that have been placed inside the Keepsake Box while in a Members world can still be used in F2P.
 * Items can only be put into the box in safe areas such as banks (excluding Clan Citadel bank) and within Daemonheim. Attempting to do so outside these areas would give a message saying "You cannot use the Keepsake Key here. Please go to one of the safe zones, such as bank areas."
 * Main Hand and Off-hand slots are dependent on equipment type, meaning you must be wearing the same type of equipment as the item you bound in order see the cosmetic override.  (For example, if a Mage's book is bound, it does not appear when a shield is equipped, but it does appear if another book is equipped in the off-hand slot, such as Saradomin's holy book.)
 * Clan Cloaks cannot be added to the Keepsake Box, the following message will appear upon attempting to add it: "This item cannot be placed in the Keepsake Box."

Restoration
Players can reclaim the item that was turned into a customisation skin back to one's own inventory; however, the keepsake key remains destroyed and a new key must be acquired to make a new cosmetic override for one slot. To do this, in the 'Customisation' interface, a player would right-click the customisation and choose 'Reclaim-item'. It is not possible to reclaim any Dungeoneering equipment that has been added using a keepsake key.

Trivia

 * As of the update on 14th July 2014, you can now store 20 items in the keepsake box, also every wearable item can be stored now.
 * The quest point cape, max cape, and completionist cape can also be stored in the keepsake key as long as the requirements are met. Using one of these items on the keepsake key gives a warning - "The requirements to wear this item may change with future updates to the game. If it is stored in the Keepsake Box and you fail to meet the requirements to equip it, you are no longer able to activate the override until you meet the requirements once again. It remains in the Keepsake Box regardless of your ability to equip it, until you choose to remove it."
 * If you store a skill cape in your keepsake box, you can equip it as an override, but you cannot use the emote. Alternatively, it is possible to store a skill cape in the box, and then equip another skill cape and use that skill cape's emote.
 * Binding an untrimmed achievement cape keeps it untrimmed upon achieving a second level 99.
 * To store an item, it has to be used with the Keepsake Key. Using the Keepsake Key with the item results in the message "Nothing interesting happens."
 * As of the update on 3rd March 2013, you can now purchase a secondary Completionist Cape if you have one stored in your Keepsake Box for 5,000,000 coins from the Varrock Museum. You will only receive an extra hood if you do not possess one, however by keepsaking or dropping the hood you are able to reclaim extra hoods.
 * This item was formerly called dragon keepsake key.