What are the options to save passwords safely and accessible to the spouse?
There are a few password storage apps that are available out there that you can use to store passwords.
LastPass -has emergency access. You keep your own accounts separate but if something happens, the non-affected party can ask for access. If the affected party doesn’t respond to the request within a certain amount of time, access is granted.
1Password-husband and wife can share the same account
Keeper app-You can have a family account
Password secured USB device like This One