Do a home inventory!! Pre Katrina, I took pics of every room, every closet, outdoor furniture, mechanical stuff, eg, hot tub pump/heater/filter, shed stuff, tools, kayaks, canoe, bikes. I did it only because a friend of mine had started a business doing it for other folks and I thought it a good idea. When I finished taking the pics, I burned a CD and stuck it in the house insurance folder. After our house was completely done in by trees and flood, it was a relatively simple matter to fill out the home inventory form.
A year later, in another house, I have done it again.