Here’s a visual of why I love KDE Activities.

Below, Emacs with one theme playing some music:

Auto-generated description: A media player interface is open on a computer screen, displaying details of a music track called Perplexagon Part 3 by the artist Kebu, with various options and information shown below.

And meanwhile, on my work instance, while listening to it:

Auto-generated description: A text editor window is open, displaying a list of tasks with various status indicators like ACTIVE, STANDBY, and DONE, alongside organizational labels and color codes.

Love it!