[dsr_]

I did this to myself 15 or 20 years ago, and ever since have put a collection area for iconified windows on a panel.

In XFCE, it's easy to create a completely transparent panel running Window Buttons with "show minimized windows only" ticked, which emulates putting the icons on the desktop but corrals them to always show up in one location. Typically, if I have more than one minimized window, I've made a mistake -- but that's what the corral is for, saving me from mistakes.