Well, after getting the very basics together, which is not easy, then you need to add to it.
Those who go camping are familiar with all the roughing-it requirements.
Ground tarp, tent, cots, air mattresses, sleeping bags, woolen caps, flashlight, firestarters (several), parachute cord, gasoline stove so you can use car gas as needed, when you can't find wood, lots and lots of water in containers, water filter, nonperishable foods for short term and long term, camping pots and pans, hunting gear, food storage.
My bugout location is within 1/3 tank of gas from my residence on the road to the mountains in a place I am familiar with where I hike, camp, and backpack. I can refuel along the way once I get out of town, and I have 4 empty gasoline containers that serve to double my gastank capacity to 40 gals which is 1000 miles range at 25 mpg.
You have to remember that cities will become death traps with everyone else looting each other. If you stay in the city, you are going to run out of ammo and be killed. You cannot deal with millions of vagrants.
Once you bug out, that will at least get you away from the nonmobile zombies.
On the roads, refugees will form migrant communities for their own mutual aid. But you will need to be a contributor.
Initially a lot of cattle will be plundered until these all run out. Farms will be raided and farming families destroyed.
Finally there will be a huge era of cannibalism and scavanging.
It will finally end up as a mad max world.
A good bow and arrows will come in handy when all the ammo has run out, and smokeless powder is no longer being produced, nor the brass and bullets to go with it.
A good fishing spear, and snorkeling gear, for lakes and ponds and coastline will come in hand too. Rod and reel works also, but spear fishing is much more reliable.
Spearfishing a lake is easy because the freshwater fishes all tend to come up to you. That's why spearfishing is not allowed in fresh waters. Its a bit harder in the oceans, but not much harder. Finding big fish is the hardest part. Then they are easy to spear on one breathhold of air, once you have found them in the sea.
Some other nation will eventually invade, and take over. That's what always happens in history.