Stamp

Stamps are special rewards recently introduced to Club Penguin. Stamps are earned by playing games and using team work. Some are for all penguins and some are only for members. They were released on July 26, 2010.

Stamp Book
The Stamp Book, located in your player card, is used to collect your stamps. Each individual Penguin has his/her own Stamp Book. Members are able to customize the cover of their Stamp Book. Stamp Books for other penguins can also be accessed, allowing penguins to show off their stamps.

In the stamp book, the stamps are divided into 4 general sections. Some of these sections also have sub-sections. For example, in the "Games" section, there are sub-sections devoted to individual games. At the moment, the "Events" section only has the Characters sub-section, however the name and layout of this section suggests that there may be future stamps for different parties and events.

Pins
In addition to stamps, Pins are also collected in the Stamp Book. Using the Stamp Book, penguins can show off their pins to other Penguins.

Trivia

 * The login screen says "There's a challenge in every stamp" and "It starts on your player card".
 * There is not a Sensei Stamp, they will probably add it later.
 * They have changed many games to make most things member so that only members can get member stamps.
 * For a few minutes when the stamp books first released, there was a bug where some penguins already had all the stamps. It was fixed soon after.
 * There is a mystery page at the end of the book featuring the penguins from the 101 Days of Fun.
 * Billybob confirmed on a What's New Blog post that new stamps will be released every month.
 * Microchip123 made a stamp machine. It gets all stamps available for that time and that player. For example, if the player is 194 days old it will not get the 365 days stamp. Also if the player is a non-member it will not get any member stamps.
 * Some cheaters use clones to get stamps you need teamwork with.