There isn't one item theres loads hidden in it
Its not an unlockable item. You have to buy a membership and wait for it to come in the penguin style catalog.
scarf
It's usually in the May Snow 'n' Sports Catalog at the Stadium
A bait item is basically an item code that when used Club Penguin sees that it is not in the catalog, and bans you because of it. They know because when you try to use a code for and old item, or most items that are not in the catalog, Club Penguin patches them so they cannot be bought anymore until they are back in the catalog. So when you try the item they know you are using a cheat program and they ban you.
Well if your talking about the item you can either get it from the Penguin Style catalog or you can unlock it from treasure book
No. By the way is there WAS a halo catalouge in club penguin it probably would of just been one item which would be a halo.
The viking helmet is always hidden in a different place on Club Penguin
The propeller hat is not an unlockable item. It needs to be bought from the item catalog (when it is there), get it from club penguin game day, or take it as a free item in (usually the April fool's) party.
The MP3 player is sometimes available in the Penguin Style catalog on club penguin. It may come in different colours at different times and will be a member item.
the viking helmet
Many times when you buy an item out of the better igloos catalog its a secret item on an object
You have to buy it in the penguin style catalog when it comes there. (Member item)