I had a 3oz Hanks in the Hood batt from Paradise Fibers that had been marinating in my stash for a while.
I spun it into a lightly twisted, bulky single...
(sorry for the awful photo)
... and then plied it with purple cotton sewing thread.
The plying was definitely a learning experience. It took a few tries to get the look I wanted and even after that it's not very consistant.
I needed more twist in my original single - it drifted apart a few times as I was plying. I am a little afraid to use, but I think after a hot wash it'll be able to hold itself together. I can't wait to try this technique again.