Food: Pack lightweight, high-calorie foods. Try freeze-dried meals (some are actually pretty good). Other good options are energy bars, nuts, and dried fruits. Bring extra food in case of any potential delays.
Cooking Supplies: A lightweight stove, fuel, pot, and utensils. A fire-starting method like waterproof matches or a lighter.
First Aid Kit: Include bandages, antiseptic wipes, pain relievers, blister treatment, and any personal medications.
Safety Items: A multi-tool, headlamp with extra batteries, whistle, and a small repair kit for gear.
Personal Items: Sunscreen, insect repellent, toiletries, and a trowel for digging a cathole. Make sure you know basic first aid and know how to handle the most common hiking injuries.
Safety Considerations
Safety first. Share your route and expected return time with someone and stick to the plan and the trail. Respect wildlife and maintain a safe distance. Find out what animals you might run into. Store food securely to avoid attracting animals. Take bear spray if recommended. Keep it clean. Pack it in, pack it out. And be aware of the Leave No Trace principles to minimize your impact on the environment.