From Guild Wars 2 Wiki
Norn Supplies are an event item used in three different events:
- Help Albin Chronicler trade with the jotun tribe: They can be purchased from the jotun Trugg. Rather than carrying them, Norn Supplies stack in your inventory and none of the jotun will buy them from you. Which makes it useless.
- Recover supplies stolen by the grawl and return them to Thraeingr: A quest item to be given to Quartermaster Thraeingr of Safewatch Vale. Can be found all around the lake in Arundon Vale.
- Return the stolen supplies to Varren