Add Simple Wind
This just adds a "simple deform modifier" with a few specific settings.
See how it works: https://youtu.be/4QLNhIhJLoU
Click on an object, go to the "Object Properties" tab, and click on "Add Simple Wind"
It adds the "Simple Deform" modifier, switches the type to "bend", and adds an empty to the object origin with rotational keyframes with Linear extrapolation. Sets the "bend angle" to a low number that would make sense for a tree or grass and finally, parents the empty to the object selected.
Every time the button is pressed, the keyframe distance is randomized, making each wind slightly different.
Since I found myself performing this task frequently for my projects, I created this add-on to simplify the workflow for myself. I hope it proves useful for you as well.