You didn’t say how big the items could be, so I’m going with a fully equipped and provisioned yacht, and a very large food hamper for the days when the normal provisions on the yacht aren’t interesting enough.
1) Drinking water until I stay there lol
2) A durable multitool – It would be essential for survival. From building shelter to preparing food, it would help me handle a variety of situations and tasks on the desert. Plus, it might make me feel a little more capable!