I abuse Adobe InDesign sometimes for creating artwork, for instance to make gant diagrams. Usually, I do not want to export a complete page to pdf in those cases, but only the boxes and text that’s going to make up the illustration. Automatication made a great tool or this, a script which adds an ‘Export selection to PDF…’ menu item to your file menu. It does exactly what the name promises: exporting your selection to a pdf file.