filing cabinets are non breakable containers, so explosions wont break em, and the hammer and wrench are potential weapons (not great ones, but not as bad as say a stick.) otherwise most if not all of that stuff can be shredded to make trash piles, or thrown into the incinerator to generate fuel. probably not much fuel though. most of those things can also be sold with the sell gun, though not the file cabinet or computer parts.