A short guide to the Life Day event introduced with Patch 2.5.1 on Dec 17 2013. There is also a guide to the Gree event available here.
Head to the Galactic Trade Market section of the fleet and look for a Master of Ceremonies NPC near the GTN. He sells a number of items but the one you want to grab for now is Life Day Snowball Bomb. This is an ability you can put on your hotbar that allow you to throw snowballs at other players and NPCs with a ~14-15s cooldown.
Snow-Covered Parcels are the main currency used in this event. You get them randomly by throwing snowballs at other players with a 15% chance to receive parcels. Despite what the description for the snowball bomb says, you can get parcels from other players even if they have the debuff from getting hit by a snowball (you can also click off the debuff manually). However, if this debuff was applied by you then you won’t get any parcels out of it. Throwing snowballs at companions and NPCs also works in recovering parcels.
- Tip: You can just throw it at your own companion and click off their debuff everytime.
The first time you get a snow-covered parcel you will get a popup window and an achievement. From here on you will see a yellow text on your screen everytime you recover a parcel.
Snow-Covered Parcels are tradeable but the ones brought do not count towards the achievement.
Sleigh I mount sold for 24 Snow-Covered Parcels. It is an adapative mount that is Bind on Pickup. Makes Jingle Bell sounds when it moves (see video).
Cyan Sphere sold for 16 Gray Helix Components and 36 Snow-Covered Parcels. Requires Champion standing with the Gree. Bind to Legacy and speeder rank 3 only.
Fireworks: Life Day Tree sold for 500 each.
You get achievements for recovering, 1, 25 and 100 Snow-Covered Parcels. You get the legacy title A Special Snowflake if you manage to recover 100 Snow-Covered Parcels.