Getting ready to go! Last minute checklist

Ok all, the time is near, my family and I will be heading off soon for our first caravan trip of many booked for the coming season! We have had our van for several months now (6 berth twin axle unit) and have been steadily buying the required equipment, using many sources from ebay to poundshops.

We have even put up the awning outside the house and managed it with only a few arguments lol.

Recent purchases include, BBQ, table and chairs, plates, usual home refinements like tea, coffee, etc etc and of course a bottle opener.

We have a sky dish receiver and all that jazz.

So would like to rack all your brains please, if there was one thing that maybe is thinking out of the box that you would never leave home without, what would it be...??