Actually I keep a similar bag packed. I live 250 miles away from my parents and farming can sometime be dangerous. My father has been in the hospital a couple times due to farm accidents, most recent was when they were butchering the day before they were to drive up to our house for thanksgiving so we packed up at the last minute and ran down there for thanksgiving. Another time was when i was at work and my mother called to let us know the hospital said there was nothing else they could do for my grandmother so they were sending her home so we had to call my wife and tell her to pack as I was driving home.
Those types of situations can happen where you needs to leave home quickly and get somewhere else, you can prepare for thm just like preparing to get lost in the woods.
I have a toilerty kit for each family member that i rotate supplies through, when we need a new toothbrush it goes in the kit and the one in the kit goes in the bathroom for use.
Those all stay ready in the closet next to the suitcases so if somehting happens we can just drop them in and go. Enough there to go for a few days so we don;t have to find a store and with my parents being rural the nearest store is 45 minutes away and is a walmart so there isn't much of a selection either.
Its just another layer of my kits, I have my EDC with me, my GHB and breakdown supplies in the vehicles, the go bags hanging in our rooms and then to extended go layer of the suitcase and kits.