Recover the Rocket Booster from the Barren North zone. You can get this item by completing the puzzle in the Barren North zone. This is one of the artifacts you need for the Picking up the Pieces quest.

Christmas - YGGF
Previous Quest:
Picking up the Pieces

Stage 1: Find the Rocket Booster

Stage 2: Return to the Elf at the Crash Site

Rewards: Santa Hat, Red Stub x1, 325xp (1)

Questline: Christmas Event