More stripping

I've continued to use up the strips in my 2" drawer and 2.5" drawer. I really want to use just those and no more. I would love to empty both but since I only need two 2.5" pieces per unit I know I will not make a dent in that one.
I can't remember if I shared where this pattern came from. Several years ago as I was blog surfing I saw this design on Keryn Emmerson's blog "quilting twin" and it was love at first sight.
So far I have 50 units made and see I will need at least 100+ more to make a good size. They go very fast and they take no more thinking than picking dark or light.
Later,
Diane