I really needed more fabric organizer boards so I decided to try the foamcore and cut them myself. I bought one of the foamcore boards from Walmart and it was hard to cut and didn't cut very cleanly. I was going to go ahead and get a couple more but they only had one more.
So on my way home I stopped at Dollar General and they had some. The paper on the outside is more like paper instead of like poster board and they're lighter in weight than the Walmart boards. They cut beautifully with one pass of the rotary cutter!!! Plus they're half the price of the Walmart foamcore! I can cut five 8.5 X 11 inch fabric organizers from one sheet of foamcore.
I use the jumbo vinyl coated paper clips to secure the fabric and Walmart didn't have any of them. But Dollar Tree did and at DT they're only a dollar per package. I even found a cute box to keep them in.