Learning the search box in the Mastodon web UI a bit better.
So far, I've mostly used it to find hashtags or user handles.
But it also searches the full text of posts I've written, favourited boosted, etc. Fulltext, but only "about my stuff".
It also searches usernames, display names. Great for finding people I know I'm following here, but where I don't remember their exact handle to use the @ or 2x@ syntax.