Group your fabrics by color and do something scrappy. The first Bonnie Hunter mystery quilt I did required a bunch of string pieced blocks with neutral backgrounds. I had a collection of shirting FQs sitting in a container for years and I was very hesitant to cut them up. I finally asked myself "WHAT am I saving them for?" and started cutting away. It was very liberating. Nothing is safe in the stash now, and I often buy 1/4 or 1/3 yard pieces just to expand a particular color.