I decided to take these things:
1) Boots for walk, 2) Waterproof jacket: to fight the cold and rain; 3) Tent: not to sleep at the open air; 4) Sleeping bag: to sleep without getting cold; 5) Rucksack: to keep my things; 6) Map: Not to lose me; 7) First-aid kiit: to do the first cures if I hurt myself; 8) Pots and pans: to cook food.