I just had a look at the screenshots of Parcellite, a GTK+ clipboard manager, mainly because I didn't know what it is.

And just like with Getting Things Done tools before, I immediately had a few ideas how clipboard managers like this could be improved.

If you add a file or a URI to the clipboard, what do you expect to see in a visualization of the clipboard? Do you expect to see the path or filename or do you expect to see an icon and the filename together with a button to open or launch that file? Maybe even a possiblity to drag the item into a file manager or some other program? It's very easy to do things like that with GIO or even ThunarVFS.

What if you copy an email address into the clipboard? Do you expect only to see the email address or would you rather like to see the email address with one or two buttons (add to addressbook, send email)?

What are your experiences with clipboard tools? Are you using them at all? If not, why? What features would you like to see in a clipboard manager to make it attractive to use?