In the 99.99% "The internet is still there" scenario, Bitcoin is the clear winner.

In the 0.01% "Lights the fuck out" scenario, handguns, ammo, food, fuel, whisky, cigarettes, etc are all usable and so they have built-in demand, so they can probably be traded.

Silver and gold don't really make sense in either case. They only make sense in the case that we literally rewind the world back 200 years and go back to a middle-advanced economy which needs a standardized store of value and settled on precious metal.