Minimalist Travel Gear Item #5
A GOOD flashlight with a clip
Always useful to have around, and not to mention, it can save your ass in a life & death situation. I’ve personally had two of such occasions: once when a storm suddenly rolled in while I was lost on a solo hike in Hungary, and I had to find my way down the mountain in near darkness; another time, I had to navigate dirt mountain roads in Vietnam on a motorcycle with no headlight at night.
While the light on your phone might work for looking for something indoors, it will not hold up in any real outdoor situation. If you plan to do a lot of outdoor or night activities, I’d go with a rechargeable Fenix flashlight. I clip mine to one of the shoulder straps of my backpack. Get something rugged, waterproof, and bright. Don’t cheap out.