I use the coroplast as well. I put painters tape on the edges so it doesn't snag the delicate fabrics, then I store it all with the rest of the quilting fabrics. My hope with that is that I will want the space back for the quilting cotton and use up or get rid of the "other" and not just hang onto it because it's not in the way. So far it's working. I cut out a skirt and 3 tops to take with me to our sewing circle on Monday to serge up and assemble.
This is currently what it all looks like:
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The first 2 shelves are quilting cotton, and the next 2 are other, then the last is batting and such. You just know I'm going to want to reclaim that space before long...