Things which you should bring in crag while mountain climbing are: Harness Climbing shoes Helmet personal anchor/leash 4 locking carabiners Rappelling device Prusik cord (per person) Climbing rope A belay device (per pair) Protection for the type of climbing you’re doing First aid kit Water, food, and snacks Hiking shoes/trail shoes/approach shoes Cell phone or another device to contact EMS 40-50L backpack with good waist support Extra double shoulder-length slings Single shoulder-length slings Locking carabiners Chalk bag Headlamp Rain Jacket Warm sweater/belay jacket Garbage bag Toilet paper Lighter Mini shovel Backpack rain cover Camera Hammock with whatever you need to set it up Drone Hand warmers for shoulder season climbing Comfy crag shoes Sunscreen Bug spray Rope tarp