Creating a PDF from selected nodes

Is there a way to create a PDF from arbitrarily selected nodes? Someone wants to create a PDF from manually selected content. He might, for instance, see a list of recently published content, and select 4 of them to combine together into a PDF. I see that we can create PDFs from individual nodes and from views, but I haven't see anything that supports manually selecting a combination of nodes. This would not be targeted at people using the site, but a content creators who want package the content in different ways, such as creating a PDF with a selection of content to send to customers or prospects.