Now that you have youre go bag going together, you really should consider a 72 hour survival backpack with the 10 essentials for survival.
A go bag to just get the kids to the hotel, and a survival backpack are 2 totally different things, and if your car breaks down in the harsh winter, or you get lost, or any number of other things causes you to be stranded, at least you have the ability to survive.
It is about quiting time here at the office, but I can make a list if you need it showing the critical items needed.
You can get most things at Wallmart and probably already have a lot of things you can use.