This is likely one of my most used addons, probably only below uBlock Origin. It's fantastic and works flawlessly. I have containers for everything, they tend to be quite specific: one for Google related everything, one for Twitter, one for Spotify, one for online banking, one for Amazon, one for Linkedin etc. This addon saves me so much time. Instead of having to click, I can just write "co goog" and it will change my tab to a Google container tab. And the best this is that you don't even lose the tab! It just refreshes it and you are back where you left. Absolutely great.