I have been following (but not closely enough) the past few weeks those who have been organizing fabrics by wrapping them around some type of cardboard/misc. material. What has been found to be the best type to hold up over time? What is the most economical? Do some types crumble within? i.e. foam core does it crumble from the inside? Where to purchase? Do you also wrap fat quarters and obese 1/8's? How many yards can one get on a board? Thanks much, Sue