On this page we see the Free Items of Club Penguin.
Rockhopper's Key
This is an item that can unlock the entrance to the Captain's Quarters when the Rockhopper launches anchor on Club Penguin. For catch this item, that indeed is a pin, you need:
Go to Book Room and click on the book "Tales & Stories"
After, click on "The Journal of Captain Rockhopper"
Click through to the last page and find the item "Rockhopper's Key"
Friendship Bracelet
This is a item done by Bamabadee, which can be obtained as follows:
Go to Book Room and click on the book "Tales & Stories"
After, click on "Rockhopper and the Stowaway"
Click through to the last page and find the item "Friendship Bracelet"
Miners Helmet
The Miners Helmet it's a Head Item, that when you dance with him on the head, you digs the soil.