Most emergency prep gear gets bought in a panic, right after the thing it was supposed to prevent. The gear below is worth buying before that happens, five categories, each solving one specific way an emergency actually goes wrong: you can't reach anyone, you can't get information, you can't stay sanitary, you can't see, and the power's been out long enough that "just use your phone flashlight" stopped being funny.
Staying reachable when cell service is gone
Cell towers are one of the first things to go down in a real emergency, and a satellite communicator is the only thing on this list that keeps working when they do.

Garmin inReach Mini 2
Two-way satellite messaging and SOS with no cell signal required. The one to have if being unreachable is the actual risk.
Two-way satellite messaging and SOS with no cell signal required, full stop. If being unreachable during an actual emergency is the specific risk being planned for, this is the device built to remove it.

Zoleo Satellite Communicator
Satellite messaging at a lower price than the Garmin, with a cheaper subscription if you're not checking in constantly.
Same core job at a lower upfront cost and a cheaper subscription, which matters if this is a backup device rather than something checked constantly. Worth it if the Garmin's price is the only thing holding this category back.
Staying informed when the power and the towers both go down
A weather radio isn't a nostalgia item. It's the one device left standing when the internet, cell service, and the power grid all go down at once.

Midland ER310 Emergency Crank Radio
A hand-crank weather radio with a flashlight and phone charging built in, for when the power and the cell towers both go down.
A hand-crank weather radio with a built-in flashlight and phone charging, so it's covering three jobs, not one, in the exact scenario where all three matter simultaneously.

RunningSnail Emergency Hand Crank Radio
A no-frills version of the same idea, at a fraction of the price, for a backup rather than a primary radio.
The no-frills version of the same idea at a fraction of the price. Buy this as the backup in a car or a second bag, not as the only radio in the house.
Staying sanitary when the plumbing stops working
This is the category people skip until it's the actual problem, and by then there isn't time to shop around.

Cleanwaste GO Anywhere Portable Toilet
A folding toilet with a proper seat height and disposable waste bags, a real step up from a bucket without composting-toilet money.
A folding toilet with a real seat height and disposable waste bags, a genuine step up from a bucket without spending composting-toilet money. This is the realistic middle ground for most households planning for a temporary outage rather than a permanent off-grid setup.

Reliance Luggable Loo
A bucket with a toilet seat lid, for anyone who wants a bathroom solution now and isn't ready to spend on the real thing.
The bare-minimum version: a bucket with a toilet seat lid. Not comfortable, but it's a real bathroom solution for very little money, and it beats having nothing.
Staying lit without burning through flashlight batteries
A lantern lights a room. A flashlight lights a path. Both matter, and a rechargeable lantern means not scrambling for AA batteries during the exact week stores are sold out of them.

Goal Zero Lighthouse 600
A brighter, pricier lantern that doubles as a real power bank, for anyone who wants one device instead of two.
Brighter than a basic lantern and doubles as a real power bank, which matters if the same emergency has also killed phone charging. One device instead of two is worth the extra cost here.

Coleman Rechargeable LED Lantern
A basic rechargeable lantern with a carry handle, for anyone who wants simple, reliable light without the solar panel or power-bank features.
A basic rechargeable lantern with a carry handle, for anyone who just wants reliable light without paying for the power-bank feature.
Seeing in the dark with both hands free
A headlamp does the one job a phone flashlight can't: it leaves both hands free for whatever the actual task is, carrying water, fixing something, checking on someone.

Black Diamond Spot 400 Headlamp
A reliable, battery-powered headlamp with enough brightness for actual nighttime chores, not just reading in a tent.
Reliable and bright enough for actual nighttime chores, not just reading in a tent. The safe, well-rounded pick for a first headlamp in a kit.

Nitecore NU25
An ultralight rechargeable headlamp favored by thru-hikers who count every ounce, without giving up real usable brightness.
Smaller and lighter than the Black Diamond without giving up real usable brightness, favored by people who count every ounce. A good second headlamp, or the first one if size is the priority.
What to actually buy first
- Only budget for one category right now? Staying informed and staying lit are the cheapest fixes and cover the most common failure, a power outage with no information about when it ends.
- Building this out fully over time? Satellite communication is the one category with no cheap substitute, since a phone with no signal is just a paperweight. It's fine to be the last thing bought, but it shouldn't be skipped.
- Living somewhere with real off-grid stretches, not just occasional outages? The sanitation picks above are built for a temporary situation. A permanent composting toilet setup is a bigger, separate purchase worth its own research once the basics here are covered.