This is a valuable set of papers to be kept someplace handy. It's probably not ever going to leave your house, except in case of emergency. I keep my pages like this in the back of my binder where I have my ward list. It's one of the first things I would grab in case I had to evacuate my house at a moment's notice.
On it you'll list important items such as:
-kids' cell phone numbers
-the phone numbers of close relatives (in and out of state)
-the phone numbers of a couple of neighbors
-doctor's numbers
-your insurance agents number and your policy numbers
-your driver's license number(s)
-credit card numbers (including the 1-800 numbers for cust. service)
-Social Security number (s)
-prescription medication info
I also list my frequent flyer numbers, dentist/ortho numbers, license plates (I can never remember them!) and have a ward list.
Feel free to customize this as much as you'd like. It really gives you a lot of peace of mind to know that all this important info is in one place. Now you'll just have to remember where you put it! I have mine in the cupboard right next to my fridge. My kids can't reach it, but I can see it right there, so I know where to find it.