> I wonder if there could be a command like list-icon-images that shows users
> the icon images they can use?

I'm using `t' (dired-toggle-marks) on all files in Dired in an image dir,
then `C-t C-t' (image-dired-dired-toggle-marked-thumbs).

> Also CC’ing Juri, since I think maybe tab-bar can take advantage of some
> of these icons :-)

After adapting new icons to tab-bar they look nice.
I invite everyone to try out this patch to see
how good they look: