I picked up a couple 8x11 ish Olfa mats for about .25 cents each at a local quilt show boutique. I use that to square up blocks or take to class. They are small enough to keep to the side of the machine, and can turn just as good as the rotating mats for a lot less money! They shouldn't be that much money at Joann's with a coupon, or keep an eye out at local shows.