I have a local printer in my town, and have thought about hitting them up regarding cost to print and die cut boxes, labels (preglued of course), controller overlays, clamshell liners, etc. My thought is that there may be some interest within the classic game collecting hobby for these items.
The main drawback is most likely going to be minimum quantities. I remember a while back when a guy was selling end labels for N64, Jaguar, and 32X game cartridges. He obviously had access to a die cut printing and gluing process.
One other item: Do any of the original publishers hold copyrights to these materials, and might they be even slightly interested in going after a video game hobbyist?