White Gifts! These were obtainable in the First Age. 

If you are interested in learning about the contents of this gift, talk to Jenna at her gift stall in Sirrus.

Potential Rewards

200 coins (7.8% / gift)
Mending I Book (7.5% / gift)
Unbreaking II Book (8.8% / gift)
Mysterious Tome (Tier II) (7.2% / gift)
White Gift Box (9.4% / gift)
15 Spectral Arrows (12.7% / gift)
2 Golden Apples (13.2% / gift)
1 Golden Apple (Enchanted) (7.8% / gift)
1 Diamond (5.6% / gift)
Red Partyhat (4% / gift)
Yellow Partyhat (3.8% / gift)
Green Partyhat (3.5% / gift)
Blue Partyhat (3.1% / gift)
Purple Partyhat (2.6% / gift)
White Partyhat (1.5% / gift)
Black Partyhat (1.5% / gift)