To complete a runner, scarf, rug, or other item you may want to add fringe to it. There are several different kinds of fringe treatment you may want to make to add to your finished article.
A scarf you may want to hemstitch, leave the fringe as is, twist the fringe, add beads..... lots of ideas.
For a rug you may like the look of a double-knotted fringe.......or how about a braided fringe?
Although I have not tried it, you can have fringe woven on four sides. The only requirement is a loom wide enough to allow for the extra threads needed to weave the fringe in addition to the width of the finished article.