G'day,
just spend 3 months on the road (first big trip) and I added spacecases to the kitchen box to get more storage.
With the respect to your questions:
Water filler hose - storage compartment of the driver side
Camp ovens - in one of the space-cases on top
Toilet tent and toilet seat - tent in a roof top box (with all the other awning parts except the main, which remained attached to the tent at all-times)
Shovel - foldable in a box in the boot (with the rest of the recover gear)
Table & chairs - rooftop box
Spare parts - box in the boot of the car
Wheel chocks - didn't take them
Wheel jack & wheel brace - didn't take tem
Chain saw - in one of the space cases
Extra canvas/poles - roof top box
Cheers,
Thomas