Some things that came to mind:

#3 is rather "tech-y" for someone who isn't quite familiar with computers. Plenty of people store important things on their computers, but many don't really know how to do more than launch iTunes or IE to surf to their favorite website.

#4 could also mention a fire-resistant safe as another alternative to protect precious photos, especially for people not so computer saavy. Storing it higher in the house should protect against water damage from floods.

#5 I think specifically mentioning a flashlight in that list of items would be good.

#7 mentions pet-friendly hotels, but could also mention that almost all public shelters do NOT accept pets. Most people who have never had to go to a shelter don't seem to know this fact.

Maybe mentioning to keep this kit and their other important items someplace quickly accessible, not up in the attic. Whether it's an earthquake, wildfire, tornado, or even a grease fire in the kitchen, they may need to run out of the house NOW with it.

Prescription meds is one important thing that everyone needs to add for themselves to any store-bought kit, and which may not be available for a number of days after some disaster. At the very least, they should grab their own meds on the way out. Better would be to have a small emergency supply in their kit.