There is no Visual Basic for Applications object model for the Office Clipboard, so there is no way to programmatically manipulate it.
As you copy items, the Office Clipboard automatically appears on your desktop. You can close it if you do not want it to appear automatically. After closing the toolbar three times, you are prompted to permanently close it. If you permanently close the clipboard, to redisplay it, on the View menu, click Toolbars and then click Clipboard.