My passwords, appx: 100 passwords for low priority accounts. 20 that would be bad if hacked (tertiary email, twitter, coursera, etc) 6 critical that I won't c

My passwords, appx: 100 passwords for low priority accounts. 20 that would be bad if hacked (tertiary email, twitter, coursera, etc) 6 critical that I won't commit to electronic storage. I would love to not have to lookup and type in passwords for the first two groups.