For me I’m always trying to think of a good password without mashing my keyboard. Here are a couple of sites I use:

• [Strong] Secure Password Generator – Favorite – I put ‘strong’ in brackets because if you search for it Google shows it as ‘Strong Secure Password Generator ‘
• Norton Password Generate – The antivirus/antimalware company has their own generator. It pretty good and configurable. It’s not my favorite because most of the is cover for advertisement for their other production.
• LastPass Password Generator – Tons of configuration and really ‘pretty’
• DashLine – Another pretty with nifty slider. This site was made more for mobile use. So the toll elements may look huge on a conventional monitor.