I use fabric. Look for the sales at JoAnn's and/or use a coupon. I just moved up to 2nd and this room has 2 ten foot and 1 four foot BB. I was able to reuse fabric for two of the boards but I had to purchase fabric for the other 10 foot board. Once it's up I don't have to change it for many years. That's what makes it well worth the initial cost.
