Built over the years, here is our generic list of things to take when camping. Just as the books a person has stashed on their shelves can tell you quite a bit about them, so no doubt here.
Passport Tickets/Ferry printout Money (Euros).
Receipts for camping booking.
Tent + anti-moisture spray.
Torch/battery light and car charger.
Inflatable bed + electric pump for bed + charger
* Red warning triangle + hi-visibility emergency jacket packed.
Duvet & cover + 2 sheets/blankets
2 foldaway seats (comfortable)
Sunshade umbrella & pole
Tools (axe + hammer + screwdrivers + pliers + stanley knife)
Clothes + towels (small, not bath) + hat + walking shoes + socks
+ toothbrush/floss + toothpaste + mouthwash
+ electric razor (fully charged)
+ hair shampoo + soap + deodorant -- shower gel/shampoo
+ comb + nail-clippers
+ pocket-knife + scissors
+ suntan lotion
+ antiseptic cream (wasps)
Squishy water container
+ gas cartridges
+ matches (several packs)/lighter
Saucepans + frying pan + kettle + chopping board
Plastic plates + cereal bowls + cutlery (plastic/real)
Breadknife + mugs + thermos flask
Coolbox/coolbag + frozen water + water + blue frozen things.
Food: UHT milk + cereal + tea.
Kitchen Roll - lots of packs - at least three.
Toilet paper + Can Opener + Waste-bags (roll)
Lots of plastic bags (for rubbish) + small plastic bin.
+ washing powder
+ washing-up liquid + bowl + sponges.
Books to read.
French dictionary/phrase-book + maps + camping sites.
Camera (mobile phone) + Alarm clock (mobile phone).
Headphones/earpieces for listening to music (mobile phone).
Mobile phone and charger + in-car-charger.
* Check EHIC (European Health Insurance Card) packed.
* Upgrade driving insurance.
* Upgrade breakdown cover (AA/RAC).
* Book Travel Insurance.