The 72 hour bag by John

First off, the purpose of the 72 hour bag is to just sustain the owner for a short duration of displacement due to a temporary emergency. It will generally contain 3 days worth of food and water as well as 2 methods for making fire, some basic hygiene supplies and necessities such as a change of clothes, cell phone charger, daily meds, etc. The majority of the items in this type of bag are consumables.
•Poncho or rain jacket.
•Change of clothes and hygiene gear.
•Food. MREs, protein bars, jerky, tuna pouches, dried fruit, nuts, etc.
•Water. Several bottles of drinking water, or a canteen or hydration bladder. You would also want some way to purify or filter for drinking. Some possibilities are chemical treatment, filtration (such as a Sawyer mini filter or a Katydyn), Or the means to boil water to kill off any organics.
•Basic medical needs such as a boo boo kit, daily medications, etc.
•Money for incidentals.
•Cell phone, charger, possibly a battery pack.