Inventory

The inventory is a part of your player card that stores your pins, clothes, awards, flags, backgrounds, and colors. You can wear the item if you click on it. The items are sorted according to their item ID in each category.

Update
When Club Penguin had its update (Club Penguin Improvement Project), the inventory was put into one category instead of two. Before, there were 2 categories. One stored clothes, one stored Pins and backgrounds. The update created a combined one with sub-categories. Those categories are:
 * Head
 * Face
 * Neck
 * Body
 * Hand
 * Feet
 * Colors
 * Others
 * Pins/Flags
 * Awards
 * Backgrounds
 * All items

Order

 * After the CPIP project, the items in the inventory were arranged by the order they were released.

Puffle Inventory
The old Puffle inventory was similar to the penguin version. It was used for puffles only. The only stored items in it were Puffle-O's, a pack of Puffle Bubble, and a Cookie. They only had 4 items. It was rare to have over 4.

Trivia

 * During the CPIP project, Club Penguin updated the items in the inventory to a penguin wearing them, but the update was removed after CPIP because they were glitchy, but the items had less of a "flabby" look which is a problem that they had before the project.
 * The inventory can hold unlimited items.