You will definitely need bottled water for hydration.
Canned goods are also useful because they do not perish quickly.
Blankets so you aren't cold in the night.
Jump suits to resist the cold weather.
clothes for warm weather so you don't overheat.
Hygiene products are very useful to keep clean.
Combat knives are very useful in a number of scenarios.
First aid kits can prevent infections and help injuries.
Maps and Guides are very good to have.
Radios and Phones to help with communication.