I posted this tip but I don't know where I sent it. (One of those "Senior Moments") so I'll post it again. This is in reference to fabric storage.
First I want to say WOW to Gayle. That is a beautiful collection you have there. And I love your cabinets!
I mounted closet rod holders (the kind you can put a shelf on the top of), used a shower curtain rod and hung 6 over the rod sweater holders. Google "over the rod sweater holder" for a visual if my discription isn't clear. I stacked my fabric in it by color so I can see at a glance what I have. You could use the shoe size holders for FQs. If I'm going to be away from my sewing room for any length of time I hang a sheet over them to keep the dust off.