Sorry for using images but I’m not sure this is what you call them, english is not my language
I’m not sure if this is what you call them but I’ve searched the wiki and didn’t find any item that goes on your shoulders like this one, I think they are called shoulder pads.
Here is a pic:
I think it could be a cool adiction and provide extra protection to the Torso maybe …
I also think you should be able to craft some of wood perhaps with 2 by 4 and some string or maybe of leather patches, here are a few images.
I couldn’t find an image for some of wood but those would probably Encoumber you the most