Saving your password to anything electronic be it in the cloud, on some paid subscription site etc. is a no-no! especially when it can be hacked. Note not "if" but "when". The whole internet is compromised with the recent release of various hacking tools from the various agencies.

You must save it offline and preferably in hard format and kept in a safe place. Maybe a safe place would be in your physical wallet where you keep your credit card and fiat currencies, it is one of the things that you always keep safe and not far from your person.

Of course you can be pickpocketed, so have a copy somewhere else at home. However to be extra safe, of course never keep you login name on the safe piece of paper.