Just build your own. 100' of paracord. A full change of clothes, long sleeves, sturdy boots, hats and scarves even if you live in hot climate because they help isolate against radiactive fallout or chemical stuff. If this is a bug-out bag maybe add earplugs and things like that. Your Dopp kit ready if you're going to have to sleep in a public shelter. Your personal emergency contact information: adresses of area hospitals, poison center, police, your relatives and their adresses, emails and phone numbers, etc. Get your immunizations up to date. And a good knife or at least a multitool. Maybe moskito repellent. Other people will come up with what's missing and suggest improvements over their items. Like I'm sure you could do better then their First Aid kit.

Good luck.

Frankie