Hope you have had a good clear out first!
Clothes for moving, comfy and set for everyone, dirty clothes in a bin bag in the car.
I always pack one suitcase and one box with essentials in, kettle, toaster, cups, cutlery etc and food for a quick breakfast the next morning.
Cleaning products go into a plastic bag along with toilet/kitchen roll, along with a dish and cloth.
Always pack any important documents wills etc and passports and put them in the car say in a backpack. Its easy to loose track of these.
Case is for change of clothes for everyone and a set of bedding and towels and toiletries for all. Essential to me and later on you will be very thankful make your beds as soon as you get them, nothing worse than when your shattered and you are not looking for bedding in the boxes at silly o clock and having to make them.
So I know whats in what bag.
Empty your bins and make sure (if you have one) the dishwasher is empty, wash all dishes.
If you can tell the movers which items (boxes)are to go into the rooms in the new house, I tend to use colours bedroom 1 red, bedroom 2 blue so on ,then I get to the new house I put post its or paper on the doors, makes it so easy.
Done this many times and packers are a godsend, but if you do have any valuables let them know, and count wine/spirit bottles, we had a large box go 'missing', only ever had one broken glass and a large rug which was ruined, but it was covered by their insurance and the cost was fully given for a new one ........sure I will think of other things