Since I mentioned doing it, I might as well tell how they turned out. I redid the headphones(hydrophone and radio), by using parts from actual pictures of Kriegsmarine headphones. They look much better now, way less cartoonish, and they match the real thing pretty closely.
I have also redone the captains pillow to match a picture of an actual Kriegsmarine issue pillow.
Can you tell that I am getting bored waiting for BIGREG.
Anyway, if anyone has any ideas for more things that could be made to resemble actual artifacts, let know and I will look into it.