To keep a kettle handy for when you get to the new house, with emergency stash of tea/coffee/gin in your car?
Emergency change of underwear/washbag/etc to save hunting through boxes at some ungodly hour?
Number of local takeaway because no-one is going to want to or be able to prepare a meal?
If you prepare like you're going camping for a couple of days you can't go wrong. 
When you get to the new house make sure all water is running and is hot, the electric/gas works and you've got lightbulbs. When we moved we had no hot water and then no water at all as it had been turned off and due to the rejigging of the kitchen layout the stopcock was not where it should have been, ie anywhere near the sink.
Label all the boxes so they go to the right rooms, otherwise tis a nightmare redistributing stuff when you've started unpacking.
It will soon feel like home, eventually. Don't sit there on your first night surrounded by boxes in a strange house after a stressful and emotional day, on your own because your dh has forgotten something, and sob that you want to go home. You are home.
Good luck!