For my projects that I am working on for Christmas, I put all the fabric in one of those plastic zippered bags you get when you buy the "bed in a bag" set.
Otherwise my fabric is on shelves in my closet, or in plastic tubs with lids. I keep cut up squares (3" up to 10") in a set of drawers in a little stand next to my cutting table. My FQ'S are in a wooden cabinet with lots of cubbys.