I always have so many projects going at once, that I can often constuct similiar parts from various projects all at once, thus saving me some time. For example, I have about six projects out of the Flights of Fancy fabric that I have going right now. And I also have about six projects that need to be shirred. A couple of them overlap. So, I shir everything at once, meaning I only have to use my elastic thread once instead of once a week for the next several months. I don't know if that makes any sense, whatsoever, but it works for me!
Although, now that I think about it, it probably isn't the most effective way to actually FINISH things. . . but, whatever.