I WISH there was a right way and a wrong way to handle stash. I think we all find what works best for us. I have kits and precuts kept separately in one cabinet or tote and my "stash" yardage is anything one yard or more on boards and stored somewhat by color - - fat quarters are in a tote by color and anything smaller than a fat quarter I try to cut into either 2 1/2" strips, 5" squares or 10" squares and I then store all of those shapes with the others that are similar.