Desert Trek

"Desert trek," 

This is the name of the challenge; I have a week to reach the endpoint, with seven midpoints to reach every day. 

The table contains things that I will need and also a weapon that I could choose, which is the only magical thing present in all. 

There are restrictions on choosing things, but with my physical capacity, I would need to be careful about what I take. Aside from water, I will not get anything from the daily midpoints, including the food, so I have to be very careful in choosing the stuff I will take, and I only have half an hour to choose.

The first thing I did was choose the clothes; the clothes should be light but also insulated; it is common knowledge that the temperature in the desert drops to minus degrees.

Which is not much of trouble if it is hundreds of degrees minus, but my current body is so weak that it would not be able to take even minus one temperature; I will freeze to death within minutes.