> - In Dired, the 'Z' command on a directory name compresses all of its files.

Dired is so handy, but it does so much. Unless I were to use this feature often enough I fear I would never remember it was there and just break out to a terminal and `tar -zcf` manually.

I feel like something already exists for this, but it would be cool if there was a "Random Mode Tip of The Day" that one could invoke for discovery and practice of things like this.