Mind your online time
This extension helps you mind the time spent in your browser so that you
don't stay there forever. Should be useful for online meetings.
Keep a real world balance (and don't forget to walk the dog).
There is not much magic, just some background images for the browser (theme) and an icon in the location bar. Both change over time to provide a definitely noticable but - in terms of website content - unobstrusive visual reminder that time has passed.