Metal Bolts, a Handsaw and a Rusted Longsword - I could have sworn I had those lying around here somewhere, but alas.
A scavenger like you will have no problem finding those, that’s for sure.
A little tip: Thronefast is a vast region. I’d wager you have a good chance of finding one of those longswords by sniffing around where the thugs and ruffians haunt.