An MTM ammo wallet with 18 additional rounds. Oh, and a wheelbarrow to carry all this stuff in!

LT

RogerA, try looking at Sportsmans Guide on and look for the hardige boxes. They usually come in different sizes from fairly small one that held night vision sights, to larger ones that usually held anything that could be put in them. Pretty sure what they sell is used unless otherwise stated. All the people in your party should carry an immediate survival kit ready to be used right then and there. If it's not on your person at the time you need it then it's worthless. Larger Hardige boxes can be added and kept in a base camp. This way if the personal kits are being used they can be replenished from the bigger ones plus a broader selection of things like stoves, camping fuel, or gas canisters for the stoves and lamps. And do not forget medications for those that take them. Frank

Depends if the area you want to survive in is urban or rural.
Urban:lightweight long gun(black gun)with aprox 100rds ammo,preferably a common cal.Resupply while surviving,what they call:live off from the land''.
Water and water purifying tablets.A good flashlight,a good knife,some high protein food in dried form.Make some friends that are also well supplied so as not to have to split your limited grub.
Rural:A long gun with same as in urban equipment plus a handgun in .22 and 100 rds of ammo for small game.Add 2 Bic lighters,at least 50 ft of propylene rope,some large plastic 6mm for shelter,an hatchet and if you still can carry it,a good sleeping bag or a couple wool blankets(wool will keep you warm even when they're soaking wet).
In both situation,don't forget to bring along a lot of.....luck!

There you have it: a B-52 and a nuke.

Sticking with the yellow theme, throw some Twinkie’s in there.

IMO
Mountain House freeze dried is the only brand of food that is edible.

response to the OP
most important element is to have a proven plan
and a better plan B