There are no rare CP item codes. I know that for a fact.
P426x3cmxp
Here are two bionicle star codes: 7AKU44 and R00K13
with some AR codes.
the bio codes are to unlock new characters in the games on bionicle.com
b4r4n5, les485, 704m47, d47um4, 5krm1x, 5kr411.
I can remember one: IGA682; it's for Toa Ignika. ;)
code for club penguin rare codes hah! i got a beyblade in club penguin the code is hw10cg132
P4F32JKXXP its my fav!!
63 and 685
If you have Bio-codes (you will find Bio-codes on the back of Bionicle sets), you can put these codes on the Bionicle website. If you have a few of these codes, you get your kanohi mask badge.
this is a rare card code:P24NXKNMXP