And your hot water heater!
You have fresh water in your hot water heater. If you have a 40 or 50 gallon water heater than you have nearly that much fresh drinking water.
Also someone mentioned that they use natural gas to cook with. Let me tell you first hand that just because you have natural gas to run your generator, stove/oven or vent-less heater don't assume you will have it in a power outage. During power outages the gas companies pumping stations might be down. This was case during the East Coast Blackout in Summer 2003.
Back in 1997 we had a bad ice storm and we lost power for 6 days.
Here is what I learned excluding what others have already said.
*have at least 2 gallons of water per person, per day, for cooking and drinking.
*candles, dollar store sells cheap ones
*First aid supplies
*extra blankets & sleeping bags (Have extras for invited/uninvited guests) ;-P
*French press for coffee (hay a guys gotta have his cup of Joe to function)
*Shotgun with #7 bird shot (criminals & zombies love power failures because most alarms won't work. bird shot will not go through the wall into the next room if you miss)
*Hobo pie maker, for homemade hot pockets and pies.
*MRE, meals ready to eat. saves time,less stress, high caloric, very mobile and compact. (I keep at least 72 meals on hand at any given time)
*Extra pet food and extra pet water
*gasoline generator
*gasoline
*Hot chicks in bikinis are huge moral boosters. ;-)
*2 wood stoves Primary & back up.