I have my fabric stash on bookcases folded on foam core boards that I cut myself from foam core sheets I bought at the Dollar Tree. I got 9 boards out of each sheet. I group all my whites, white on whites, off whites, and cream together. Next is all of my solids, then all my stripes. For the rest of my fabrics, I go by the Roy G Biv theory (red, orange, yellow, green, blue, indigo and violet). When trying to decide what color category my prints go into, I choose whatever color stands out the most. Example: if a fabric has red and blue flowers on a yellow background, if the yellow stands out more, I put it in the yellow section. If the red flowers are bright, i will put it in the red section. Because my fabrics are on shelves I can see what I have. If I am looking for fabrics with yellow in them, I go to the yellow section first. But because everything is visible, I can also see if I have a fabric in the blue section that has yellow in it. All of my batiks are together as well as all my holiday fabrics. I have one shelf that is devoted to charm packs, jelly rolls, layer cakes and fat quarter bundles. I have the rest of my fat quarters in a 6 drawer Sterilite rolling cart and they are organized the same way as my shelves. I have one drawer that is full of panels.