This much we know!
I have searched the Club Penguin February March 2008 Igloo Upgrades Catalog and these are the secret, hidden igloos: This much we know...
Go to your igloo and click on the igloo icon on the right hand side of your screen. You should now be able to see the Club Penguin Igloo Upgrades February March 2008 Catalog.
There are three hidden igloos in the Igloo Upgrades Catalog Feb March 2008: there is a secret stone igloo; a secret deluxe stone igloo and a fish bowl igloo.
Go to your igloo and click on the igloo icon on the right hand side of your screen. You should now be able to see the Club Penguin Igloo Upgrades February March 2008 Catalog.
In the Club Penguin Igloo Upgrades catalog, go to page 6 where a snow globe igloo is advertised. Click on the writing about the snow globe igloo and you will get offered the Fish Bowl Igloo for 2400 coins!
In the Club Penguin Igloo Upgrades Catalog on page 5 there is a picture of a penguin pulling boards up with a metal tool, near the top corner of the page. You need to click on the metal tool and you will get offered the chance to buy the Secret Stone Igloo for 2000 coins!
In the Club Penguin Igloo Upgrades Catalog on page 16 there is a picture of a Deluxe Snow Igloo. You need to click on the door of the deluxe snow igloo and you will get offered the chance to buy the Secret Deluxe Stone Igloo for 5000 coins!
These are all the Club Penguin furniture catalog cheats that I know. If you know any more email me or add them to my blog: look on my navigation bar for Club Penguin Share Your Cheats and Glitches
I will update the Club Penguin Cheats pages with any new hidden items so check back regularly!
Club Penguin: Share Your Cheats and Glitches is the Club Penguin blog page of my website.