For organization, check out this link: www.polarnotions.com. The storing looks so neat and you see what you have. Yes and expensive. But I did a search on ebay for corrugated cardboard and found (100) 11 7/8 x 14 1/2 for $15. Shipping is high though at $16. I've asked what the charge would be to cut them in half to 11 7/8 x 7 1/4, which is just about the size on the link. But to think I might get 200 cardboard panels for $30-$40, it's worth it to me. I'll let you know what I find out. I also asked about a size for fat quarters, but I don't have many of them. I usually buy in yards unless I know what quilt I'm making and the amounts needed.