My Plan
Fill this in together as a family — it takes about fifteen minutes. Everything saves automatically to this device only (nothing is sent anywhere). Then print copies for the go-bags, the car, and each wallet, and Export a file to copy onto the other phones via Import.
The plan lives only in this browser on this device. To put it on the other phones: Export here, send the file however you like (or a USB cable), and Import there. Re-export after big changes — and keep a printed copy in the documents folder regardless: paper survives phone loss.