Here is some of what comes to mind:
toilet paper
toilet paper
more toilet paper
soap, toothpaste & feminine hygiene products, even if there is no woman around, condoms aren't a bad idea either
potable water (55 gallon drums sealed is good, or a bunch of 5-6 gallon jerry cans that seal tight, even plastic gallon jugs can work if they are the thicker ones)
food spices AND tools to prepare/cook the food (wheat with no grinder is rough)
shelter/blankets/sleeping bags/tent/lean to
clothing to cover all seasons
maps of the area you are in at the time AND knowing at least 3 different routes to where you want to be, home, cabin, friend/family etc
paper non-computerized phone books
space blanket, whistle, fire starter and other relevant survival stuff
defensive gear
medicines AND first aid kits (bigger is better)
fire extinguishers (bigger is better)
fuel for the engines you will need to run ie generator, fuel/water/trash pump, vehicles(preferably diesel and/or propane for long term reliability) AND fluids/filters for said machines
chainsaw & 2 cycle gasoline, make sure you try to get pure gas with no ethanol if possible to prevent the carb getting fouled up, or the highest octane available and something like sta-bil to keep it fresh longer
wood/grass/trash powered heating for when the other fuels run out, preferably with said fuels stockpiled on hand
tools to process wood, repair/maintain machines, etc
vehicle recovery gear, cable/chain/strap, winch/comealong/hilift can be used to clear large debris
bicycle with a small cart/trailer for if vehicles aren't an option
hand held CB's are generally better than the walkie talkies, but anything that works is better than nothing
consider either a 12v or propane deep freezer that will run with no a/c electricity
snacks & games to help with boredom/stress
one or more spare 12v batteries on a maintainer so they always stay full for whenever
universal power supply with your most sensitive electronic devices plugged in for emergency power and current spike protection (your internet might still work during a power outage if you can power your laptop or modem)
regular plain old handset phone that will work off of the phone line power, ie not cordless/computerized

I am sure there is plenty I am forgetting, but that is some of the more important things I have thought of during different life experiences.