Went through Ivan and learned some hard lessons. For the house, store it someplace safe so even if you evac it will be there when you get back.
Gas cans, can't have enough (5-10), they will sell out immediately. Filled with gas is preferable!
Plastic sheeting to cover holes in your roof till FEMA gets your the "blue roof"
Bucket cap nails, that may not be the name but the roofing nails with the wide plastic cap so you can nail the tarp down and the wind won't shred it.
Water and food
Radio (battery powered)
Insurance papers, contact numbers, etc. Hopefully you won't need these but have them handy.
Cash, not all large bills either.
Pet supplies
Extra propane tanks, a warm meal on the grill is nice.
MREs if you can get them.
Firearm of some sort that you are comfortable, society has the potential to unhinge itself without the basics we have come to enjoy.
chain saw (trust me you will need it)
Flashlights, candles, lanterns, batteries. It gets dark at night.
I don't go the generator way because its tough to procure gas and they tend to drink alot of gas, but to each his own. If you go the generator way figure out how you will power your stuff. Lots of extension cords or back power the house (safety note: kill the main breakers or you can kill yourself!) Talk to the experts, just know how you will do it before you need to do it.
Roofing nails, extra shingles, roofing tar (caulk tubes). If you only lose a few shingles this might be all it takes to get dry again.
Good knives!
If I think of more, I will add to the list. Good luck.
Pete