Why would anyone need an infinite amount of plant fibers? I do not know, maybe someone will need.
- 1) Collect 10 plant fibers.
- 2) Craft sleeping bag.
- 3) Place it.
- 4) Destroy it (I recommend using some kind of tool, such as an stone/iron/steel axe).
You will notice that you will get more plant fibers than you spent on crafting.