Complete caravan virgins

Corkscrew. 

Kettle

General advice would be not to dash out and buy every conceivable thing in the accessory shop.  Have a few trips out and talk to other people on site about what they couldn't live without.

Try to manage with things from the house for a couple of trips until you see how it would best work for you.  My van is complete with bed linen, towels, pots, pans, crockery, cutlery and toiletries, first aid kit, tool kit, television and CDs so all I need to add is clothes and a certain amount of food and I'm ready for the off.

The obvious things are aqua roll, wastemaster, pump, EHU cable, step, small container for daily freshly drawn drinking water.

Oh and yes - kettle and corkscrew.  

A bottle to use the corkscrew on!

Agree with Jill. Try to manage with things from home - cutlery, plates etc but invest in lighter weight stuff as soon as you know how much you need. ( we have enough 'kitchen stuff' to feed 6 for when the family ( who are usually in tents) join us for meals

We got our first caravan this April and love it. A pen and pad is great for noting things you need to remember for the next trip. 

Our Lunar Quasar is short on plugs but solved using a couple of adaptors. 

Tea, gin, wine, mugs, glasses and a chair each are our 'essentials'!

Some non-slip rubber matting to line shelves with because everything will try to shift when you're on the move.

An odds and s*ds box for fuses, spare torch batteries, electrical tape, tube of glue  etc and anything else that's useful to have with you in case of need.

A good door stop comes in handy to keep the door open on those hot days.

First aid kit; pack of cards.

Just a tip. Get the rubber matting to line your shelves from Pound shops and not the caravan places.