Buy and plant your own Christmas Tree
Visit the Xmas Tree holder, Longbo who is located in Ricarten town.
Longbo is renting Xmas Trees (two versions, just different visual).
Rent one of his trees and place the tree anywhere you want (You can do so by right clicking on it).
Now other people can now give you a bunch of item as a gift, someone can only give you once per day a gift (like people can give 5 items in that little box but they can only press Gift button once per day).
The next day (5 AM server time), all gifted stuff becomes available for retrieval at the Xmas Girl NPC by the owners of the trees and all xmas trees disappear.Note:
If lucky, people who gave a lot of gifts to people (called Generous Givers), get a chance to receive a Gift Box in their own Xmas Tree (if they have one), a Gift Box can be rightclicked to receive a random premium item. Gift Box can also give the Red or Green Xmas Hat. Generous Givers also get the chance to receive the Green/Red Xmas Hat directly in their own Xmas Tree.Give a Red Sock or Green Sock to someone else's tree, and you will receive a Gift Box!