I made this random password generator to quickly spit out passwords.
It's designed to not just spit out a random string of characters, but contain the basis of words you could read over the phone.
They way I designed it is to be used as a one-time password that's given to a person and they would be forced to change it on next login.
As it uses real words as it's basis it's not ideal to use the passwords it generates for the long-term, but it should be fine until the user is able to log on and reset it.
Give it a try here: random password generator