Originally Posted by Scissor Queen
I think the ones you're talking about are the coroplast boards. Somebody here on the board sells them pretty reasonable and you can get them on ebay and Clotilde has them too but they're a lot more expensive from Clotilde.
I found the seller here on the board,
http://www.quiltingboard.com/t-94172-1.htm
Your right!! That is what the fellow called them. I got 48 of the large size for 12.00 out of one 4 x 8 sheet.