Otis has a basic metal shop and is not shy about a bit of welding or grinding. He needs to know that you have at least a little experience. Are you able to repair the brush hog when needed? He’s been thinking about re-mounting the jack on that old trailer - is that something you can even do? He once made a nice latch for the barn - have you ever done anything like that?
I turned up what I believe to be a utensil used in trade by early settlers with the indigenous peoples. It was a small bit of iron in the shape of an ax head that would be useful for splitting vines or scraping hides or fitted to a handle to fashion a tomahawk. Perhaps the Iron Badge could entail the gathering of enough Magnetite (did they use magnets?) for the purpose of smelting enough iron to make a 'Trade Ax', or would a hammer-head come first?