How can I make Konqueror only show certain bookmarks in the bookmarks toolbar?
In Konqueror go to Settings->Configure Konqueror…. Then select Web Behaviour from the icon list. Under the Bookmarks heading, place a check in the box next to Show only marked bookmarks in bookmark toolbar. Now in the Bookmark Editor an option to Show in Toolbar appears on clicking with the right mouse button on any bookmark entry or in the Edit menu when the entry is highlighted. Folders can also be shown in the bookmarks toolbar in much the same way.