I took a 24x24 board from the hardware store, wrapped it with a thick towel (beach size) and made pillowcase-style cover for it. When it gets too overstayed, I just slip off the cover and towel and wash it with the rest of the laundry.
I made sure the cover was a colorfast fabric (used some pretty leftover fabric), and that it fit snug. Makes a very nice area to press plus it is not too big that I can't slid it into a small space in my motor home, allowing me to have a nice pressing board while on the road.