Any features or apps more people should know of or would benefit from?

On this one, the No Large Media Elements from ublock Origin, it is a pretty good feature. Animations or pictures larger than the selected size are replaced by a red border. Clicking it will load that image.
Or you can temporarily turn it off for the website and reload the tab. There is an option to exclude Websites too. e.g. Excluding Lemmy instances where you want to see images by default.

More info: https://github.com/gorhill/uBlock/wiki/Per-site-switches#no-large-media-elements

Remembered about this recently in a Lemmy convo. I had heard that uBo with full capabilities is now only available in Firefox.
Curious to know other apps or extensions that may have some cool features.