Just came across this bit of info and thought it was appropriate for T2k.
Forget wasting your grenades to catch some fish, try fishing with car batteries!
You take the battery, hook up some jumper leads/cables and then throw the ends of the cables into the water. Make sure to remove the cables from the water before retrieving fish
Allegedly it will stun or electrocute the fish.
Who knows, maybe it really does work? But even if it doesn't work too well in the real world, it might make survival for the PCs a little easier in the game world.