Cut a one inch strip of drop cloth. I like to snip mine a little at the top, and then tear it the rest of the way. This gives it that stringy look. If you want the cut to be a little cleaner, just cut it all the way.
Put a little hot glue on a 3″ styrofoam ball and attach the end of a drop cloth strip. Just start working your way around the ball, until the entire thing is covered. I kind of cross over back and forth, which you can see in the video tutorial above.
Once the entire ball is covered, take a 10″ piece of jute twine and make a little loop. Tie a knot in the end and glue it onto the drop cloth covered ball.