why not measure the hight of each shelf and then get some fibre board cut to size this can then be slid into place so seperating the shelf into narrower sections ,, now simply fold the fabric into colours and stack. you can see at a glance what you have and if arranged in rainbow colours you will also be able to see matching fabrics. hope this helps.
I do not have this problem as hubby said i can get to keep all the fabric i can hide, the only problem i now have is climbing the ladder to get into bed and adding fabric onto the bottom of the valance sheet
annie in the uk