Cleanup and reuse unused Copy&Paste disk space occupied by VMware
Whenever you Copy&Paste (or Cut&Paste) something into or from a VMware instance, the software first copies the files into a temporary directory and later on sends the copy/move job to Windows. Since the Windows task is asynchronous, VMware has no chance to find out when this actually finishes - so it is supposed to clean up this temporary directory at boot time.
However, waiting for the next reboot can clog up quite some disk space (when I develop something I often have to copy many files around between several virtual machines and the desktop) - despite that Windows still likes to BSoD on me from time to time. And sometimes VMware does not get the cleanup right at reboot and the files are still there.
So I wrote myself a little Cygwin shell script (you should really consider installing Cygwin when you have to work on Windows) and the execution of this script is scheduled every night by the Windows Scheduler.