A good first-aid kit has all the basics:
Band-Aids
Neosporin (or some generic version)
Gauze pads
Iodine or alcohol prep pads
Adhesive tape
Pain relievers
Candy (treat yourself or the injured to a quick sugar fix)
This may be the "basic" first-aid kit, but it is definitely not a complete one. When making a first-aid kit, you must personalize it by thinking about you and your needs. Do you often suffer from a bloody nose? Pack some tissues! Are splinters an issue? Bring a pair of tweezers! Do you worry about getting blood on your clothes during an emergency? Throw in a Tide-to-go pen! A good first-aid kit is about fulfilling your needs. While a basic kit is helpful, there will always be items that are specific to each person. So when customizing your first-aid kit, think about your medical past, your physical present and how you want to be prepared for the future.