Chrome

Add Bookmarks and History as separate "search engines"
- Settings | Manage Search Engines | Add Search Engine
- Give them a single-letter keyword each
- Bookmarks: chrome://bookmarks/?#q=%s
- History: chrome://history/?#q=%s
Now you can access those from the omnibox
- The omnibox is the browser search bar
- On Windows: Ctrl + L
- On Mac: Cmd(splat) + L
- Then enter the keyword (configured abnove - I'm using b for bookmarks and h for history) and hit Tab
- Note that on Mac Catalina I'm finding that any search term you enter directly will get crappy results, so I just enter a random character and then tab inyo the actual search text box

Gmail / Google Calendar

Add bullet list: Cmd + Shift + 8
- Indent a sub item: Ctrl + ] to indent right, Ctrl + [ to indent left
Other gmail shortcuts
Stop receiving notifications when people respond to invitations, etc - note that this is set in the settings for each individual calendar, NOT in teh general Google Calendar settings - that's why it's so hard to find!

To avoid playing whackamole with the infuriating toolbar at the bottom...
- To mute/unmute yourself: Cmd + D (Ctrl + D in Windows)
- To toggle video: Cmd + E (Ctrl + E in Windows)

More here
Cmd k [channel name or person name] to open new channel or direct conversation – eg Cmd + k + nagiosdeploy
- Ctrl + K on Windows
Cmd + Shift + \ - emoji reactions to someone’s post
:[emoji name] – emojis embedded in posts
`[code]` (ie text encased by back ticks) - code
Cmd + [ - go back to last channel / DM visited
Cmd + ] - go forward again
- On Windows: Alt + <- or ->
Cmd + Shift + T: Open the threads view
Cmd + Shift + M: Show "activity" / mentions - ie times when you've been @ed (also accessed via @ symbol top right)

If you want to search for a term in a particular channel: in the search box (top right):
- Like this: roadmap in:observability-priv
- Actually it’s this: roadmap in:#observability-priv
- ...but the hash symbol gets inserted for you if you forget it.

I seem to have installed this, but I think it's a free trial that only lasts 7 days?
This looks worth looking at.

To add voting functionality to Trello, click the menu top right, then select powerups and search for the Voting powerup to add it.
Once it's added you can vote on Trello cards by hovering over and pressing on the keyboard, or opening up the card and finding the Vote button on the right.
You can then order cards in a column by how many votes they have, by clicking the three dots at the top right of the column and selecting "Sort by..." then "votes".