The old case that my Korona, 8x10, came in is from around the early 1900's and it was made from what looks to be a very thick card board. Thicker than 8 ply mat board (more like 16 ply) and covered in cloth. Considering the age of the case and what it is made of it looks pretty good. I do not use it now, but have seen others like it - in fact I think that the Shen Hao 8x10 cameras can be ordered with a aluminum case that looks for all pratcial purpose like the old Korona case. Just have not found a source for them.
Would be interested to hear how your search works out LG, let me know if you get in touch with Spock...those Vulcans.