Some gear suggestions to bring on a backpacking trip:

Kitchen: mess kit, utensils, lighter/matches, stove and fuel, water bottle/hydration system, water filter.

Survival: first aid kit (purity tablets, pain killers, tweezers, gauze, etc.), moleskin, maps, compass, flashlight/headlamp, insect repellent (if necessary), knife, emergency blanket, whistle.

Clothing: wool socks, daily socks, hiking boots, down booties and jacket (for cold weather), sandals (for warm weather), rain gear (poncho or waterproof/breathable jacket, and rain pants), gaitors, fleece (if necessary), sleepwear, bandana, t-shirts, zipper-off pants, underwear, hat.

Toiletries: toothbrush/paste, deoterant, toilet paper, soap, sunscreen, lip balm, daily medicines.

Shelter: tent, tent footprint, sleeping bag/liner (if needed), sleeping pad.

Miscellaneous: camera and film (if not digital), pack cover, candles, sewing kit, watch.