Major Types of Fibers (Not Hairs)

There are two types of fibers: synthetic (man-made) and natural (from plants/ naturally made)
Some synthetic fibers are:

Polyester

Nylon

Acrylic

Kevlar

Acetate

Some natural fibers are:

Bamboo

Spider silk

Animal hairs made into fibers (Wool, Angora, etc)

Flax

Cotton

These are all used for a variety of things, such as making wigs, ropes, clothing, and even bulletproof vests.