Day Clipboard Utility (free) is a nice little app that takes text or an image that you've copied to the clipboard and captures it into itself upon your request. It will then save said image or text file in its own folder. This whole process can be automated, or you can approve each piece of text or image as it comes in to the clipboard.
The developer says it works only with text and images copied with a Ctrl-C. This isn't entirely accurate: Anything that hits the Clipboard that's a piece of text or an image will be routed through Day Clipboard Utility. Well, almost.
I tested the limits of Day Clipboard Utility by attempting to copy a file into the clipboard that wasn't an image or text file. Day Clipboard Utility correctly ignored it. However, right clicking on a .TXT file in Windows Explorer and copying it did not add said file to Day Clipboard Utility. Only selecting text and copying it works for that purpose. This seems an unnecessary limitation; ideally Day Clipboard Utility would work with any plain text in the clipboard, regardless of where the user gets it from.
One other useful ability of Day Clipboard Utility is the ability to copy multiple lines of text and combine these into a single list, and then port that list into a text file. Day Clipboard Utility also includes a few mini-utilities, such as the ability to change a text file to all-caps or all-lowercase (though the Italian translation renders "lowercase" as "miniscule").
The interface could use a little work. All of the program's preferences are represented by radio boxes and dropdowns littered throughout the user interface itself. A better UI would remove most of these and place them in a preferences dropdown.
Quibbles aside, Day Clipboard Utility is worth a look. It's free, and it extends copy-paste and the clipboard in interesting and unobtrusive ways. Give it a try.