Making a rear divider or other interior panels
Did something similar with my Duster except I used veneer door skin ply. I wanted something capable of hanging amplifiers from. The trouble I had was the original cardboard like piece that I used for a template actually shrank over the years. Fortunately there was enough material to make 2 of them. Still have to cut the back seat bolt holes in them:
Looks kinda cool back there with the trunk light on: