Change the locks so the kids can't move back in when you are away
Take photos of every room in the house with the contents..While you are at it take photos of your wardrobes, bookcases, open drawers, don't for get the shed!
Store photos on a USB stick with someone else
These are great to review in a couple of years time to see the changes & have a laugh
If your house gets knocked off then you have something to show the insurance company
This seems to be happening more & more so digital records are worth having especially for the more mature ( saves the memory)