What is "small-stuff"

Small-stuff is a nautical and knot-tying term for thin string or twine, as opposed to the thick, heavy ropes that are more often used in sailing. It is commonly used in a whipping to bind the ends of ropes to prevent fraying.

Historically, the term referred to cordage less than one inch in circumference. Much of the small-stuff onboard ships, especially that used for decorative or fancy ropework, was made by the sailors themselves reusing materials unlaid from old and leftover pieces of larger rope and cable.