Go bags, aka emergency kits, can range from a basic three-day bag to multiple plastic tubs meant for a longer-term crisis.

What you choose to take is up to you. But here are some items to consider:

Water, at least one gallon per person per day for drinking and sanitation

All necessary family and pet medications. Ask your doctor or vet for an extra prescription’s worth of each. Organize and protect your prescriptions, over-the-counter drugs and vitamins to prepare for an emergency.

Cash, in small bills. Cash machines can stop working, the cell network can go down, and credit cards might not work either. Cash was useful during Hurricane Sandy.

Quarters for washing machines

Instant coffee or tea

Several days’ worth of non-perishable food per person

A first aid kit, including non-prescription medications such as pain relievers, anti-diarrhea medication, antacids or laxatives, as well as necessary medical devices

Cell phone and a way to keep it charged

Feminine hygiene items

Soap and laundry detergent

Prescription eyeglasses and contact lens solution

Infant formula, bottles, diapers, wipes and diaper rash cream

Flashlights and extra batteries

A radio and extra batteries

Whistle to signal for help

Dust mask, to help filter contaminated air

Plastic sheeting and duct tape, if you need to shelter in place

Moist towelettes, garbage bags and plastic ties, for personal sanitation

Wrench or pliers, to turn off utilities

Manual can opener, for food

Local maps

Consider adding the following items to your emergency supply kit based on your individual needs:

Soap, laundry detergent

Pet items: see “And don’t forget your pets,” page 13

Sleeping bag or warm blanket for each person

Complete change of clothing appropriate for your climate, plus sturdy shoes

Fire extinguisher

Matches in a waterproof container

Mess kits, paper cups, plates, paper towels and plastic utensils

Paper and pens

Books, games, puzzles or other activities for children

Keep the kit in a portable container or containers, and store in a designated location that is easily accessible.

Information from ready.gov.