Get your head out of the gutter-not those type of balls. *sheez* Here you can see two different colored spun and wound balls of silk that I have plied (next photo).
I plan on making a charm bag for a friend who has allowed me to prune her mulberry trees so that I can feed my silkworms. I just died the ball on the left, the purple one. The other one I dyed in splotches then spun. Neat!