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Re:Ask HN: What do you carry in your backpack? by mindcrime on Sunday September 03, 2023 @03:41PM (#37373666)
> What are the "cotton balls dipped in Vaseline" for?

Fire starting. They will easily take a spark from a ferro rod and convert it into an open flame. And they burn long enough to make it pretty easy to transition to a sustainable fire. These things are a popular DIY fire starting accessory among people who are into bushcraft / survivalism / whatever.

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