The newest pin in Club Penguin is the Snowman Pin. You’ll find it in the Ski Lodge Attic. If you haven’t been there in a while, go to the Ski Village on your map and then go inside the Lodge. It’s the building on the left of the winter sport shop. Then walk to the back right corner where the ladder is and go up it.
The snowman pin is in the bottom left corner of the room, sitting on top of a cardboard box.