Vaguely related, I saw an extremely nice little bit of UI on a MRI machine console the other day. When planning a sequence of scans, you drag them into a listbox. But once that listbox is "full" from top to bottom, it's hard to append to the end (rather than inserting between two existing scans), because you keep having to hit that tiny 1px wide target between the bottom of the box and the last entry.

So someone at Bruker noticed this, and made a drop target UNDER the listbox that's labeled Drop Here to Append. It makes things SO much more pleasant.

Best screenshot I could find online: https://www.researchgate.net/profile/Horea-Christian/publica...