I want to make an "all you need to know" binder for my elderly parents and home health nurses. Any suggestions?

So, I have this idea and I need help. I want to make a binder for each of my parents with everything they need to know about anything - something they can reference instead of relying on the internet (scary place for old folks). Also it would be something for their home health nurses to reference when they take them out for appointments, etc. I want it to include pouches for insurance cards, copies of insurance cards, copies of SS cards, copies of health policies, car insurance policy, numbers for lawn care, numbers for errand services, numbers for adult day services, numbers for snow removal, copy of lease agreement, budget sheet, tax preparation checklist, etc. Anything you can think of that you'd want your loved one to be able to reference easily and conveniently, please respond! I think this will solve a lot of confusion issues. I can always tell my mom and dad and their nurses to "check the binder in section _______, it should have everything you need to know, and come ask me if you can't find it." I'd also make myself one so I can reference anything they're looking for. (can you tell I'm an organization nut?)