Where is the password generator?

Coming from lastpass, I do miss this feature. My use cases will be similar to mpavitt -- mostly acrobat docs for opening / editing or seriously long ones to prevent people from "editing" them in Illustrator. Otherwise would be for zip files and other public distributable content.
Of course, when I reset passwords for users, I may need to generate decent enough passwords for 1 time use like "w2hgY%6&k" so a customizable generator would be helpful. Perhaps it can be toggled "show advanced options" -- I do encounter some sites, mostly municipal types or small biz that don't accept all punctuations.