In your Kilimanjaro daypack, you should carry everything that you need while hiking: 2-3 liters of water, rain gear, sunblock and sunglasses, camera, lunch or snacks, extra layers, wet wipes, hand sanitizer, waste bag, spare ziplog bag to protect electronic gadgets against rain, etc.
You may also want to keep your valuables including your passport and money with you at all times. Place them inside a plastic ziplock bag to protect them from potential rain, and store them safely in a separate zip compartment within your daypack.
Please also keep a copy of your insurance and emergency phone numbers with you at all times.
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