• Box of bandaides, assorted sizes
• Nonstick sterile gauze bandages, assorted sizes 
• sterile rolled/flexible bandage
• sterile gauze pads
• sterile bandage tape
• safety pins
• disposable latex gloves
• scissors
• tweezers
• eye wash
• syrup of ipecac (to induce vomiting incase poison is ingested)
• antiseptic spray or lotion
• burn ointment
• non-aspirin (like tylenol)
• ibuprofen
• antidiarrheal medicine
• calamine lotion
• hydrocortisone cream
• benadryl (for allergic reactions)
• thermometer
• hot water bottle
• cold pack
• heating pad
• emergency contact information with contact numbers
• first aide guide or book

When an emergency occurs you do not want to be running around the house looking for what you need. It should all be in one container, labeled, and out of reach of children.  These are just the bare necessities. Ofcourse it's a good idea to have medicines for colds, coughs, upset stomache and things such as humidifiers.