Humm only 5? 1. wipes (wet type sterile like baby wipes). 2. assorted bandages (like Band-Aid) wet, dry in sizes from dots to 4"x4". 3. Neosporin & Pain antibiotic ointment. 4. strong pain killer (Like Vicodin preferably ES). 5. Gloves (surgeon's latex just be sure you are not allergic to latex). 6. extremely high quality tweezers set.
My travel first aid kit has around 20 items and I have far more than that laying around the house. These are the top 6 but I'm a big believer in a well stocked home kit. You never know what might happen and you could end up playing medic to more than your own family. Of course your brain is the real #1 item. Everyone should have at least the basic knowledge of proper first aid.
For fire you need a burn kit and an evacuation plan, I have both, but I don't know that there is much one can do about a fatal accident. That falls beyond the realm of first aid. Maybe a last aid kit would work, I don't have that one.
I always keep a stash of bandaids, hydrogen peroxide, and extra blankets.
Hydrogen peroxide has come handy for many situations. Cuts and scrapes benefit from the disinfecting properties. It's also good for removing stains from blood on clothing after someone gets a scrape or cut.
I keep extra blankets because I have children. There have been many times when someone gets suddenly sick and they need clean bedding to go back to sleep or to wrap up with to stay warm. I've been stuck with dish towels in the past when both of my children had a horrendous bug at the same time, so now I purposely stash blankets in the linen closet for emergency situations until the regular ones can be laundered in the event of a sudden illness.