Greenclip is a plug-in that gives you a list of things previously added to the clipboard, letting you go back through your clipboard history and grab things.
Only downside is that it will also store anything copied from a password manager. Not very secure!
To get around this I use a little script you can bind to a keyboard shortcut, so that Greenslip will pause recording for a bit:
ps axf | grep 'greenclip daemon' | grep -v grep | awk '{print $1}' | xargs kill -20
sleep 10
greenclip print ' '
ps axf | grep 'greenclip daemon' | grep -v grep | awk '{print $1}' | xargs kill -18