Well, the .41 Swiss rimfire ammo I have for my Vetterli M.78 is pretty old, so I probably wouldn't grab that one.
Oh, and the repro Colt 1860 doesn't sit around loaded. It's too much fun to dry-fire and "help" the good guys in the western movies. So count that one out, too.
Oh, and the 83mm Blindicide shoulder-fired rocket launcher -- WAY too much collateral damage. I mean, a few random holes in the wall for ventilation is one thing, but adding an entirely new egress ...