There is first aid and emergency. You can blend both.
My advice for a Dad looking for an emergency aid gift is: Buy him a "ZOLEO" !!!! if he doesn't have it. Let him pay the monthly basic fee during hunting season and he can freeze the service for $2 per month anytime. You and him will be glad he has one.
I found that many of the first aid kits have a bunch of silly stuff. I bought a basic one-person first aid kit and started to remove and add stuff based on my needs, not to mention I am always looking to shave ounces and I do not want to carry a brick full of stuff. At the beginning of hunting season I go through it and toss,add and replace.
With modern technology like a couple of lighters and again my Zoleo things like making fire and signaling stuff are not an issue. I added a little plastic tube container with vaselined cotton balls for fire starter. You have to keep that stuff dry when it rains though.
First aid stuff I like to have :
Pain relievers, pills for an allergic reaction, patching kit to fix yourself if you get cut or have a small puncture ( good tape, gauze, antibacterial wipes and ointment, even a laceration kit to close the wound).
Some sort of bandage long enough for a knee, ankle, and such. The Israeli emergency bandage for $8.00 is nice to have and it is also great for bigger wounds.
Tick removers, and a little sawing kit for repairs (the needle is great for removing painful splinters). Stuff to patch your feet (duck tape/leuko tape). Visine for your eyes for windy days.
I also carry a little roll of bright orange plastic tape for marking an entry exit point or my way back just in case the phone is dead. or to wrap it on a dead deer antlers so I don't get shot...a bunch of trigger-happy people out there.
Occasionally I will throw in a "Sam Splint II" They cost $20 and it can help you to support a dislocated or broken joint/bone, it weighs nothing and takes no room.
You can add a lot more but the way I see it is that if I have something catastrophic happening to me, I am going to call for help with the Zoleo. Other than that between my gear and the first aid kit I am pretty self-sufficient out there. At least I think I am.
A way to purify and collect some water just in case he runs out might come in handy...but good luck finding some water during dry years.
Save the money, get him this :
And add these 2 to his Christmas stocking :
But what do I know...