The beauty of being crafty is that it opens up the possibility to make something out of things that others would probably discard. Now that I have been spinning away with my drop spindle and really starting to get the hang of it, I did some research as to what might be helpful when plying two single strands of yarn together. There is something called a "Lazy Kate" which holds the bobbins of spun yarn and makes it easy to ply several strands together. Seeing as I just depleted my PayPal account buying roving for my new hobby, I decided it'd be easier to make one myself rather than having to buy one for now.
After rummaging around my office, I realized that all the supplies I needed are actually right here. Not only that, but they're plentiful and easy to access. So, here we are - my Lazy Kate recipe.
-2, or as many as you may need, plastic CD spindles (I work in music so there's lots of these around. They usually hold CDs before they go in jewel cases)
-1 cardboard box that is a little narrower than the length of the spindles
-1 pair of scissors
It's definitely a rough prototype and I will make a prettier model later, but it works like a charm (no more "toilet paper roll" bobbins running around the floor) and cost a spectacular free 99. Can't get much better than that!