Shell commands
Assign terminal commands to hotkeys/command palette. I created this plugin for being able to easily run Git version control commands in Obsidian vault’s folder, and to open a terminal application if I want to do advanced stuff with Git. Moreover, people have used it to generate content to their notes from external sources, do regexp matching on note file content and copy the result to clipboard, open the current note in Visual Studio Code editor with the caret* being placed exactly where it was in Obsidian, etc.
*) The caret position feature uses a new variable that will be released in near future.