I love the superglue for first aid kit. You can perform miracles with it.
Same with duct tape and a little wire.
Leather gloves are another great idea, protection if you are digging something out or get in a bad spot
My wife says "You better pack some feminine products or I will make your life very uncomfortable if I am at that time" So some products are being added.
She says she is packing her own kit and it is going to include a radio, 2 way radios, extra batteries, advil, toothbrush and toothpaste. Gotta take care of your teeth if the SHTF
I also like the idea of matches and tinder in pill bottles. Keep em dry and easy to light.
Thanks for all the great ideas