Every year, Square Enix holds an event in Final Fantasy XIV to celebrate the holiday season. The event, titled "Starlight Celebration," usually includes unique items that are only obtainable during the event, with a possibility of them becoming available in the Final Fantasy XIV Shop in the future.
If you want to get your hands on this year's exclusivities, you can take part in the upcoming Starlight Celebration event that will begin December 14th and will run until the end of December. This year, you will be able to obtain the festive Snowman Bell mount and some Holiday themed furniture for your home.
To take part in this year's event, you will need to start the "A Festive Fiasco" quest by talking to Amh Garanjy in Old Gridania.
You will also have the opportunity to obtain specific items from previous Starlight Celebration events via the Seasonal Shop that is usually available near the quest NPC.
Make sure you log in and partake in this event to get your festive holiday items!