I purchased the archival comic book boards on line in 100's pack. They seemed like poster board strength but I have had good luck wrapping them. The stand up in my cabinet. I don't put mor that 3 yards ( or less than 1/2 yard) on because then the wrap isn't good. Of course, that's me
. I love the idea of a hidden shelf to hide My excess from dh....too late...he already knows I'm addicted to fabric.