I am using Wobbly Windows right now in KDE. Desktop Cube works too but I don't like it (I use 16 desktops instead of 4 :).

When I have to use Windows every once in a while I am viscerally disgusted by the lack of wobbly windows. Moving windows just feels wrong - very, very wrong. Takes a second to realize they're not wobbling. To me it makes the computer seem less robotic and more natural in a way, I guess. Like haptic feedback on smartphones when you tap stuff.

Exactly what I told my sister few months ago. The windows just feel stiff and unnatural.

I don't know about you, but I've been running wobbly windows up until about a month ago, when I disabled KWin's compositor in favour of picom for performance reasons. I hope to get them back when I'm able to start using KWin on Wayland.

I still use both on KDE Plasma desktop. Life is great.

Many other options like fire-on-window-close and zooming are also available.

I believe you could get them just using kwin the window manager.

FWIW, if you don't see them as options: make sure that the KWin compositor is set to OpenGL mode, rather than XRender.