We will leave the rest to Jefferey Gould the Public Loss Adjuster.
If the task of taking inventory looks very complex, well it can be. That's why some people choose to calling a professional Home Inventory Service. We don't expect everyone to take their own inventory, but we do expect you to get on the road to making sure one is created. If you wish to take inventory yourself, use one or more of the many 'inventory taking' methods, described on our Home Inventory network of sites.
Aussie Home Inventories suggests these links for further Disaster / Loss Preparedness.
7 Ways To Create Your Home Inventory.
Home Inventory Software - The One We Use.