I made a small Text file containing All my current Login & Current passwords..
ie.. Walmart -- ID (cheapbuy) Password ($$$saved) then you can hide it away in your computer (easy to do)
Encrypted if you so require... Most of the time you can just abbreviate a few letters/numbers, just looking at the cheat sheet
will help you remember the Password..
Another way is to hide the "Sign In" info within your Contacts (iCloud) Never the Full details, just enough to jerk your memory..