I have long been bugged by the "diropen" toolbar button icon. It's the usual "open" icon everybody is used to, with a "d" letter overlayed on top, which not only doesn't mean much on first thought, but is language-centric.
So today, while waiting (at work) for an exceptionally slow server to come back, I quickly gimp'ed together this one. Since it's a derivative work of the normal "open.xpm", it's therefore GPL. Hope someone else likes it...