Theres an extension where you can add different buttons like bookmarks etc, i think it was called firefox menubuttons or something but i cant find it so i must have remembered it wrongly.
I use the All-in-One Sidebar and have several buttons placed on it, such as New Tab, Bookmarks, Downloads, CookieCuller, Extensions, Wikipedia, Add Bookmark, Organize Bookmarks, Firebug, and Search.
My bookmark toolbar has a couple of different bookmarks on it now, and the buttons after Refresh are now FEBE (Firefox Extension Backup Extension), Translate, and Options. I now have a Paste and Go button and a Customize Toolbar button between the address box and the Search box. Oh, and the shot has the sidebar open to my extensions... normally it is closed to only the strip with the buttons.
Looks good Trotter, got millions of extensions there! ive only got 2 at the moment, Gmail manager and Firefox menubuttons, im running Nasa nightlaunch theme aswell (black) looks good.