hi! this website will tell u a lot of cool cheats check it out! Igloo Catalog Secrets
The Igloo Catalog Secrets are the same.
Click the crowbar at the top of Page 5 for the Secret Stone Igloo
Click the door on the Deluxe Stone Igloo for the Secret Deluxe Stone Igloo
Sports Catalog Secrets
Click the in the following order for the Silver Surfboard (wear it in Catchin’ Waves to go MUCH faster).
The Mission-Select folder and F.I.S.H. has been updated. Click the sunglasses to get the Night Vision Goggles (which can be used in place of the flashlight in Mission 3). And once you get medal for the new mission, you can open it and see what time it is!
If you cant read this it says Congratulations you tipped the iceburg would you like to get you coins and rainbow color for your penguin? 
ninjas
yes this post is about the fabled and famous ninjas, although i dont know much about them… 
the ninja is about the same thing as the agent except you dont try to help club penguin be safe. i have heard many claims on how to become ninjas and researched them all and tested a few. i am sad to say i am not a ninja myself :(but lets get off of that. 
the only one i have heard that works i have not tested and it is that you must wait untill you are 310 days old and just sit in the dojo for half an hour. after that half an hour a group of ninjas will pop out and bounce around. go to the trap door they came out of quickly before they go back in and it becomes hidden. it will ask if you want the ninjas mask(HECK YEAH) and then you can return any time. now i do not take any charge of the reliability of this ninja-becoming thing for i have no clue if it works or not and i am sorry if i waste a half an hour of your time.well thats all i have on ninjas so please leave me posts if it works or not.
or
Ninjas!
First, go to the dojo which is located at the upper right part of the mountains then stay on one place, don’t move or even walk for 30 minutes. The max time limit for idles is 10 minutes, to extend the time simply talk, dance or throw snowballs. After that, you will be able to see three penguins with blue and black bands then they will ask you if you want to be a ninja, do this quickly or you will miss the chance to be one.
in the pet shop if you click the new house you can get the gray house!
i will be out of state for a week 
ill be back soon and ill try to edit when im back. 'till then, happy club penguin waddling!♥