When you do a long, multi-part project with a couple of constant elements you realize that the way you handle these constants takes on a life of its own. In my 2011 package project each package or bundle had a label to tell when it was made. Because the project rules called for at least one package a week, I decided to number the weeks as the primary identifier. For instance, this package was the third one made in week 23.
This one was marginally above kissoff level.