Make Hover State
My first and most-used Figma plugin. It's a tool that you can quickly run with any component or set of components to create a hover variant already hooked up with the interactions and variant names.
This and all of my other Figma plugins—like Make Checked State—all follow a pattern of running just once with minimal configuration and no UI. I like to think I'm following a bit of a Linux philosophy #1 with these tools, where they do just one thing well and are named like commands that I wish Figma had natively.