A collection of things I've learned that I think others might like to know, but aren't big enough to fill a whole page all their own.
You can double click to select a full word in most GUI applications — but it turns out if you keep the mouse held after the second click, and drag, you can make a larger selection that still only contains full words.
yt-dlp -Sres:1080 URL will download the best quality video no larger than the given vertical resolution.
mpv has a --term-title option that can expand various properties. My music player currently passes in ${?pause==yes:⏸ }${?pause==no:♫} ${media-title}.
In Blender, F3 will open a command palette.
In Firefox, you can right click the URL bar for many websites to add their search page. This can then be set as the default, or given a custom shortcut under Settings > Search > Search Shortcuts, so that by typing @foobar<Tab> in the navigation bar you can search that website. For example, I have search shortcuts for the following:
For sites this doesn't work on, there's an extension:
CTRL-B - Open bookmarks side panel.CTRL-D - Bookmark current page.CTRL-D ALT-R - Delete bookmark (if current page is bookmarked).