: While often made of tinplate, manufacturers like Contents Seed produce character badges that are frequently packaged with high-quality cardstock backing. Go to product viewer dialog for this item.
For collectors, various retailers offer official paper-based merchandise:
The most common "good paper" items are the official physical volumes.
It sounds like you're looking for high-quality paper goods or the manga/light novel for ( Apparently, Disillusioned Adventurers Will Save the World ).