If you'll please indulge me in a little bit of self-promotion: my favorite Chrome Extension (also works in Edge/Brave/Vivaldi and other Chromium based browsers) is called Umbraco Productivity made by yours truly.
With over 900 installs, it's likely that you've heard of it already but if not: it's your small and friendly Umbraco browser companion to help you switch between the backoffice and frontend, start MiniProfiler, help search for errors and lead the way to Our / Twitter / Discord. A small demonstration:
It's an open source extension so if you have any good ideas of what could be added then I'm all ears on the issue tracker of the repository. Of course if you just want to look at my sloppy code, then that's fine too of course!