I got my comic book boards on amazon, they were like $10 for 100. I bought them along with a couple other items that qualified for free shipping so I didn't have to pay that.
I'm not really clipping the fabric to the board. When I have finished wrapping the fabric around the board I just use a straight pin to keep the end of fabric from unfolding. It's working for me for now.
I think with these I will be able to organinze and keep my fabric organized by color. Hard to do when it is lying flat. So far I have only had to use one board for each length of fabric but when I get to the longer peices I have I will probably want to stiffin it more with a second board.
I had read about these here on the qb and finally decided to see how they work. Work great.