About the only thing that would work would be to double twist two strands, spin them together, and knot the ends.  This would be incredibly time-consuming to do by hand, especially since you'd have to unravel the ends of the fabric quite a bit to start.

Another option is to use some of the amazing knitting yarns to create a fringe.  I especially like the chenilles and better wool yarn.  I cut 12" pieces by wrapping the yarn around a 6" wide rotary cutter ruler.  I then do a loose decorative or zigzag stitch across the hem of the scarf--the threads will be disguised by the fringe--and use a crochet hook to draw one piece of yarn through and then double-half hitch knot it.

The resulting fringe is lush and lovely, and it's relatively quick; you can do the fringing and knotting while watching tv or talking to someone.  You can choose contrasting or complementary colors, and the texture of the nice yarn really plays off the wonderful wool.

To calculate how much yarn you will need, find the total yardage of the skein (say 350 yards)and divide that by 3 to get the number of fringe pieces from that skein.  Then you can count the number of zigs or stitches across the hem of the scarf to find out how many pieces you will need.  One skein will usually do both ends of a 40"-wide fabric throw.

Hope that helps!