Personally I think a simple passphrase is best that is innocent enough to be able to be kept in plain sight but complicated enough to withstand cracking power.
There is really no reason for some crazy passphrase like f53NDJsj3fj38f8cn3c8F or something that you will never remember.
> As an expat, I feel like the only place I have is my apartment and no trusted family where I can store stuff. Any ideas?
This is a tough one, but if you really do have significant funds on it I would stamp in metal and put in a safety deposit box in your home country (granted your home country has safe banks) as insurance on your expat apartment building catching fire or something. Don’t put your passphrase in the deposit box, just memorizing that along with keeping it with you in your apartment.
Then you could keep another stamped metal of your keys in your apartment. Most simple way is to stamp them into some stainless steel washers and then bolt those together. 99.999999% of people will have no idea what that is….and someone who finds it won’t know your passphrase.
There are other ideas of metal tags you could stamp and store and make it look like it’s nothing like just link them on a key ring with a bunch of keys and who’s going to even look at it twice?