Ladder heights.
The other major one is not being prepared enough. I wouldnt know if its exactly a fear but it makes me uneasy thinking I am not prepared enough. I constantly strive to have extra canned food in the house, or extra bottle watered. Extra ammo. Extra knives. Extra guns. I dont horde things but I cant stand the thought that if a natural disaster or economic problem happened that I dont need to rely on anyone to feed and protect my family.
I joke around alot about zombie invasion and dont believe something like that would seriously happen but its a damn good excuse to live the way I live.