Other Stuff to Bring when Trekking Rinjani : High calorie and high protein snacks like chocolate, nuts, and cookies. During the trek, you will be served Indonesian food.
a power bank in case your phone runs out of battery.
A 1 – 1.5 L Water bottle – it is hot and humid in this part of the world, so yes you will sweat and you will need to hydrate.
Torch for night time, or any source of light for your tent.