How to Build a 72-Hour Emergency Kit: A Family Guide for Every Zone

Organized home emergency preparedness shelf with glass water bottles, glowing LED lantern, spare batteries, first-aid tin, and folded blankets

Picture a stormy evening. The wind picks up, the lights flicker, and the house goes dark. In the quiet, a small voice asks, "What do we do now?"

And you already know. You reach for the box on the bookshelf, click on a flashlight, and hand out the hand warmers. The radio murmurs the latest update while everyone settles onto the couch under one big blanket. Nobody's scrambling. It almost feels like a camp-out.

That calm is what a 72-hour kit really gives you. It isn't a bunker full of canned beans. It's one small, doable goal: having what your family needs to get through the first three days of an emergency on your own.

Why 72 hours?

After a big storm, a long power outage or an evacuation order, it can take a few days for power, help and normal store shelves to reach everyone. That's why FEMA's Ready.gov and the American Red Cross suggest keeping at least three days of basic supplies on hand. Three days is the bridge between "something happened" and "things are getting back to normal."

Here's how to build that bridge, one step at a time.

Step 1: Decide who (and what) your kit is for

Before you buy or pack anything, make a quick list at the kitchen table:

  • How many people live in your home?
  • Any babies, kids, older adults, or anyone with medical or mobility needs?
  • Pets?
  • Will this kit live at home, in the car, at work, or all three?

A single adult with a long commute needs something different from a family of five. Writing it down keeps you from overbuying, and from forgetting the person (or dog) who matters most.

Step 2: Water first

Water is the most important item in any kit. Ready.gov's guideline is 1 gallon per person, per day: roughly half for drinking and half for cooking and basic hygiene. For 72 hours, that's 3 gallons per person, plus extra for pets.

  • For a grab-and-go kit: sealed emergency water pouches are light, compact and store for years. (Every Preppi GoBox 3-Day Kit already includes 3 days of water rations with up to a 5-year shelf life.)
  • At home: add stored water in sturdy, food-grade containers. Label them with the date and swap them every 6 months.

Want a simple filter for the kitchen counter? The RKIN Zero Installation Countertop Reverse Osmosis Water Filter needs no plumbing or installation (it does plug in). To compare everyday home filter options, our How to Choose a Water Filter guide walks through them, or browse Water Collection & Filtration.

Step 3: Food that needs nothing

Your 72-hour food should need no cooking, no refrigeration and very little water:

  • Emergency food bars with a long shelf life (ready-made option: the Preppi Essentials Emergency Kit and GoBox kits include food rations)
  • Nut butters, crackers and trail mix
  • Pull-top cans or ready-to-eat pouches
  • Something comforting, like a favorite snack or a treat for the kids

Aim for about 2,000 calories per adult per day, and pack food your family will actually eat. Building a deeper pantry over time? See Food Storage Basics and our Food Storage & Canning collection.

Step 4: Light, power and news

When the lights go out, the first thing you reach for is light. The second is news.

  • One light per person, so nobody has to share in the dark. The FLATEYE FR-500 Rechargeable Flashlight has three brightness levels, from 500 lumens down to a low setting that runs up to 90 hours, and a flat design that won't roll away. For hands-free light while you cook, read bedtime stories or walk the dog, the Adaptev Rechargeable Headlamp is a favorite.
  • Glow sticks make the dark fun for kids (one comes in each Preppi GoBox and Little Prepster kit). Skip candles if you have little ones or pets.
  • A radio that doesn't need the wall. The Preppi Solar Phone Charger & Emergency Radio is a weather-band, AM and FM radio, LED flashlight, SOS alarm and 2,000 mAh phone charger in one palm-sized device. It recharges by hand crank or by sitting in a sunny window.
  • For longer outages, a battery power station like the Jackery Explorer 1000 v2 can keep phones, lamps and the Wi-Fi router going. It runs on a battery with no fumes, unlike a gas generator, so follow the manual and it can live right in the living room. Just need phones, a lamp and the router? The smaller Jackery Explorer 300D (288Wh, 5.5 lbs) is a lighter alternative.

Step 5: First aid and personal care

A basic first-aid kit handles the small stuff, like cuts, scrapes and blisters. Look for bandages in several sizes, gauze, tape, antiseptic wipes, gloves and a first-aid guide. The Preppi Metal First-Aid Kit keeps everything color-coded and individually packaged in a waterproof steel case, and it's made in the USA. (A kit is basic supplies, not a substitute for first-aid training or professional care.)

Then add:

  • A few days of any daily medications (ask your pharmacist how best to do this)
  • Spare glasses or contacts
  • Hand sanitizer, wipes, toothbrushes and toothpaste
  • Period-care products, diapers and wipes if you need them

Coming soon: ARK PREP™ Reusable Cotton Cloths, a washable, low-waste addition to your hygiene kit.

Step 6: Warmth and shelter, adjusted for your zone

Every kit needs mylar emergency blankets, a rain poncho, and a warm hat, gloves and spare socks for each person. (The Preppi GoBox includes a mylar blanket and poncho; a POWERCAP 2.5 LED beanie is a warm hat and a hands-free light in one.) Then adjust for where you live (find your winter zone here):

  • Severe Cold zones (long, deep-freeze winters and high-elevation areas): pack more warmth than you think you need, like extra layers, a sleeping bag and rechargeable warmers. The POWERPAW 501 Rechargeable Hand Warmer heats up in under a minute and replaces a drawer full of single-use packets.
  • Cold & Ice Storm zones (cold winters with frequent freezing rain): add extra power for phones and lights, since ice storms can mean several days without power. A compact Jackery Explorer 300D or a FLATEYE FR-500 for each person covers the basics.
  • Mild zones with surprise freezes (usually mild winters with the occasional hard freeze): many families don't keep winter gear, so set aside warm layers and blankets now, and keep extra stored water in case water systems are strained after a freeze.
  • Mild & Coastal zones (mild, dry or coastal climates): plan for wind- and wildfire-season power shutoffs. Prioritize phone charging, a respirator mask for smoky air (included in the Preppi Essentials Kit and GoBox), and a kit you can grab quickly.

Step 7: Documents, cash and a few practical extras

  • Copies of IDs, insurance papers, medication lists and an emergency contact list, sealed in a waterproof bag (a vacuum-sealed ForJars 8x12 bag works well)
  • Cash in small bills, since card readers and ATMs don't work without power
  • A whistle for signaling, a dust or respirator mask, and a basic multi-tool (all three come in the Preppi GoBox 3-Day Kit, or use ones you already own)
  • A family photo and a favorite small comfort for each child

Build it yourself, or start ready-made?

Both are good choices, and lots of families do a mix. Building your own is a lovely weekend project to do together, but sourcing a dozen categories can stretch over weeks, and "almost done" kits have a way of staying almost done.

A ready-made kit gets your family covered today, and then you make it yours. That's why we carry Preppi kits: thoughtfully packed, made in the USA, and handsome enough to live on a bookshelf instead of hiding in the garage.

  • For one person: the Preppi GoBox 3-Day Emergency Kit is a book-sized box with a pop-out handle. It holds 3 days of food and water rations (up to a 5-year shelf life), first aid, a hand-crank flashlight, a mylar blanket, a poncho, a respirator mask, a whistle and more.
  • For the whole household: the Preppi GoBox Family Emergency Pack bundles GoBoxes at a better value, so everyone has their own.
  • For kids: the Little Prepster Kids 3-Day Emergency Kit adds an activity pack, coloring pencils, a glowstick and hand warmers, so little ones stay calm and busy. It comes in a GoBox or a canvas backpack.
  • For your dog: the Preppi Pupster Dog Emergency Kit includes food and water rations, a collapsible bowl, an emergency leash, a pet first-aid kit, a chew and a tennis ball, because they're family too.
  • For the car: the Preppi GoBox Roadside Emergency Kit adds jumper cables, a headlamp, a reflective vest and warning triangles to food, water and first aid.
  • For the office or as an add-on: the compact Preppi Essentials Emergency Kit packs food and water rations, first-aid supplies, a hand-crank flashlight, a poncho, a respirator mask and a whistle.
  • For a hands-free grab-and-go bag: the Prepster Backpack (one person) and Prepster Two-Person Kit are water-resistant canvas bags stocked with food, water, first aid, tech gear and comforts. For a household of three or more, the GoBox Family Emergency Pack is another option.

Not sure which one fits? Preppi Kits Compared puts them side by side, or browse all Kits & Bundles. Preppi kits are final sale, so check the product page for full contents before you order. Once you have a base kit, tuck in your personal items: medications, glasses, documents, a family photo and a favorite snack.

Where to keep your kit

The best kit is the one you can grab in under a minute:

  • A hall closet near the door you'd leave from
  • A bookshelf in the living room (a good-looking kit doesn't need to hide)
  • The trunk of your car, with a second, smaller kit
  • Under your desk at work

Show everyone at home where the kit lives, and let the kids help pick the spot.

Keep it fresh: a 2-minute, twice-a-year check

When the clocks change in spring and fall, make it a family "kit night." Check expiration dates, swap the kids' clothing sizes, refresh medications, and test the flashlights, headlamp and radio. Two minutes, twice a year, and your kit stays ready.

Your 72-hour kit checklist (save this)

Use what you already have first. Where it helps, we've noted one option from our shop; every item can come from your own cupboards.

Start small, start today

You don't have to finish everything this weekend. Pick one step today, maybe a flashlight for each bedroom or a GoBox for the hall closet, and add one more next week. Every step brings a little more peace of mind, and that's the whole point.

Keep reading. A few more guides to help your family feel ready, one cozy step at a time:

Not sure which kit fits your family? Just reach out. We're a small, family-run, woman- and minority-owned business, and we're happy to help you choose.

“Preparedness is love made practical—a quiet promise that when the world outside feels uncertain, your home remains a place of warmth, light, and steady hands.”

— Ark Prep · Preparedness, designed into the everyday.

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