A first aid kit should include: adhesive bandages (various sizes), sterile gauze pads, roller bandages, elastic bandages, adhesive tape, triangular bandages, antiseptic wipes, alcohol swabs, antibiotic ointment, hydrogen peroxide, scissors, tweezers, thermometer, disposable gloves, pain relievers (aspirin, ibuprofen, acetaminophen), antihistamines, antacids, anti-diarrheal medication, instant cold packs, heat packs, eye wash solution, cotton balls, swabs, safety pins, a CPR face shield, and an emergency blanket. It’s essential to store it in a durable, waterproof container, keep it accessible, and regularly check and replace expired or used items. Adding a first aid manual can also be helpful for guidance during emergencies.