If you are a Disney Movie Rewards user you can get 14 days of FREE Club Penguin membership using your Disney Movie Rewards points. Read here for info.
For 350 points you can redeem a code to become a member on Club Penguin for 2 weeks!
How does it work? If you ever buy a Disney movie you can unlock special offers by entering the ‘Magic Code’ inside Disney DVDs and Blu-Rays (one of those special offers being 14 days of Club Penguin Membership). If you are Disney Movie Rewards user you can click here to redeem your membership.
Thanks to Monchocho for letting me know this!!