Nintendo Power (the official Nintendo magazine in the United States) is sponsoring a surprise "item" that can be bought at Tom Nook's shop, in Animal Crossing. All you have to do (and this is the hard part) is find a copy of the latest Nintendo Power magazine.

Once you have the code, go to the official Animal Crossing site and click on the "Play" section, from there find the banner that says "Know the Code? Get the Goods!". Another code will be given to you.

Enter the code at Tom Nooks store and you will receive a special gift to place in your house!