I was going to say heavy water, but TIL that it’s not just chonky water. It can be toxic.
I do selfhost everything I can, but have chosen not to do that with my passwords. It feels to much all-eggs-in-one-basket-y.
1Password also holds my SSH keys and acts as an ssh-agent on most systems, and I also just found out that you can get secrets from your 1Password vault in Python, which means my PyInfra scripts can use it as well.
I pay for a 1Password family account. I like it.
Getting the family to use it is hard, but that would be the case with any password manager.
Good example.
In a similar vein: setup alarms. Smoke detectors is an easy one, but also water leakage detectors. If feeling adventurous, maybe logging of water/power usage as well to catch slow leaks.