I've kept track of my works-in-progress and works-in-the-queue in various ways, in the past--lists and so on--but yesterday I decided to whip up an Excel spreadsheet about this. No math involved, but Excel is so good for checklists. I'll be keeping tabs on information for each project: start date, deadline, finish date, name of pattern, pattern source, yarn source, etc.
*runs off gleefully to do some crocheting*
*runs off gleefully to do some crocheting*