This is more for me than anyone, as a checklist that I can add to during planning. Anyone interested in making a similar trip might be interested, so I put it here on the website.
Vehicle
Most of this is recovery gear, but with some other essentials and luxuries.
Maps (books and loaded onto laptop / phones)
Roof racks
Recovery boards (Max Trax)
Dual battery system
Air compressor / tyre inflator
Fridge
Puncture repair kit
Tyre levers
Tyre gauge
Crow bar
Shovel
Bush saw
Axe
Tarp
Jack block (piece of wood)
Recovery / snatch straps (2)
Rated shackle
Heavy gloves
Jerry cans
Ties (cable ties, wire, winch straps, cords, occy straps)
Tools (wire cutter, shifting spanner, pliers, socket set, pocket knife, etc.)
Octane booster x 3 (for when premium petrol not available)
Jumper cables + jump starter
First aid kit
Rags
Food and water
This is what will always be in the vehicle, just in case, and includes things to cook with.
50L water
Water purifying tablets
Food (dried fruit, nuts, energy bars, chocolate, biscuits, milk, bread, soups, coffee and tea, salt, sugar)
Frying pan
Toastie maker
Saucepan
Kettle
Gas camp cooker
LPG cylinder
Matches, firelighters
Picnic set (plates, bowls, cutlery)
Wash up tub
Washing liquid
Scourer
Tea towels
Plastic bags (rubbish etc)
Ziplock bags
Insulated shopping bags
Clothing, sleeping etc.
Again, just essentials - things not to forget.
2-person tent
2 camp chairs
Table
2 sleeping bags
2 Sleeping mats
2 Pillows
Blankets
Towels
Polar fleece
Rain coat
Boots, sandals
Laundry powder
Hats
Sunnies
Toiletries
Toilet pack (spade, wipes, toilet paper)
Aerogard (spray, with propellant)
Technology, other
Phones
Laptop (to post to the blog!)
Sat phone
GPS watch or portable GPS
Power banks
2nd battery (deep cycle lithium)
Digital SLR
Tripod
GoPro
Binoculars
Torch, headlamps and lantern
Radio
Kindle
Cards
Starlink satellite dish (see Lesson #1)