The first time I plyed I used an awkward wrapping-yarn-around-hand technique as seen here:
Yes, my finger is purple. The spindle in the background is filled with yarn I had also plyed yesterday, but using a different method:
Essentially, I put two full spindles of spun yarn into cardboard boxes. I wrapped the two spun yarns over a hook (for tension), then plyed the two yarns with a another spindle.
I've already dyed the small left over yarn with kool aid, there'll be pictures tomorrow, once it dries.