I have a similar but different need. From a music publisher's site or maybe YouTube, I will copy artist, track-title and album-title -informations from 3 different locations, and a little later paste them all into a Save As... box, to make the downloaded file name become a normal music track name. When this is done, the clipboard content in the 3 'boxes' are outdated and is not needed again. I have never found a clipboard manager with this particular feature, even though many people must download poorly named music/vidoe files.