I made a big board to go on top of my regular ironing board. Just a piece of OSB plywood (7/16", I think?) cut 22 X 60 at Lowe's, covered with one layer of all-cotton batting and a scrap piece of very heavy canvas.
It cost about $10 to make and boy do I love it! I can press full widths of fabric or huge sections of quilt tops in one shot.
I need to take the canvas off and wash it and while it's off, I'm going to apply velcro to it so that I don't have to deal with the staples every time it needs washing. I'm also going to make a couple of pillowcase-type covers for it.