How to Build a 72-Hour Emergency Kit for Under $100

Emergency preparedness doesn't have to break the bank. While pre-built kits can cost $200-$500, you can assemble a fully functional 72-hour kit for under $100 by shopping smart and focusing on essentials.

Needs vs. Nice-to-Haves

A 72-hour kit keeps you alive for three days. Every item must serve a core need:

Need	Priority	Budget Solution
Water	Critical	Store tap in cleaned bottles ($0)
Food	Critical	Dollar store non-perishables
Shelter	Critical	Mylar blanket + trash bags
First Aid	Important	DIY from drugstore items
Light	Important	LED keychain light ($1-2)
Tools	Helpful	Multi-tool from discount store

The $100 Shopping List

1. Water ($0-5)

Clean 2-liter soda bottles, rinse, fill with tap. 3 gallons/person. $0.

2. Food ($15-20)

Item	Qty	Cost
Canned tuna/chicken	4 cans	$5
Granola bars	12-pack	$4
Peanut butter	1 jar	$3
Crackers	2 sleeves	$3
Dried fruit/nuts	1 bag	$4
Hard candies	1 bag	$1
Total		$20

3. Shelter ($8-12)

Mylar blanket 2-pack ($3), heavy-duty trash bags ($3), duct tape ($2), lighter ($1).

4. First Aid ($10-15)

DIY kit: bandages ($2), antiseptic wipes ($2), ibuprofen ($3), antihistamine ($3), hand sanitizer ($1), travel toothbrush ($1).

5. Light ($5-10)

LED keychain light ($1-2), extra AAA batteries ($3), whistle ($1), small AM/FM radio ($5).

6. Tools ($5-8)

Multi-tool clone ($2), N95 mask ($1), pen+paper ($1), $20 cash (already carry it).

What NOT to Buy

Item	Why Waste	Alternative
Survival shovel	Heavy, expensive	$5 claw hammer
Water purification tabs	Expensive per dose	Boil or 2 drops bleach/qt
"Tactical" gear	Overpriced branding	Regular gear works fine
Fire starter kit	$15 vs $1 lighter	BIC lighter + keep dry

The 30-Minute Build

1. 0-5 min: Collect water bottles, backpack, tape, scissors
2. 5-15 min: Dollar store for food, first aid items
3. 15-25 min: Pack into ziplock bags by category
4. 25-30 min: Label, date, store in accessible spot

Something beats nothing. A 30% complete kit you actually own is infinitely better than a perfect kit you never bought.