New arrangements which worked for me this year were:
Washing up bowl with handles from Ikea, which happily transported:
- enamel mugs
- proper kitchen knife (in a scabbard)
- micro-plane parmesan grater (best way of pureeing garlic for cooking and salad dressing),
- 'chop to pot' chopping board (saved many an onion from spilling on the grass)
- handled-scoop colander thingy
- aeropress coffee maker
- plus washing up liquid, sponge etc and tea-towels
King sized aerobed mattress with own duvet and pillows. Some mornings I hardly hurt at all 
Small s-hooks for hanging wet coats on tent poles
Moon chair - just the right size for the bedtime story with DS
Small lidded wooden box - about the size of a car footwell, used as a nightstand for glasses and lantern and holding:
- Wet wipes
- Tissues
- 2 wind-up lanterns
- Torch
- Booklight
- Electric tealights and paper tealight-lanterns
- Playing cards
- Backgammon
- Scrabble
- Cooks matches
- Roll of binliners
For next year I've already added a flat-packed plastic vase from Ikea, but mostly just to annoy my sister who's a bit pshaw about flowers in a tent 
So what's on your list - stuff which worked this year and stuff you want for next year? Tell me all 