A very curious tool to be able to customize Windows XP is UberIcon, a small program that by means of plug-ins (some are installed with the program and others can be downloaded from the creator's website) apply effects to the icons when they are activated.
Among the effects we'll be able to see one that makes the icon expand before disappearing, another that makes the icon become many small ones and even one that makes it go blurry.
The program doesn't include a user interface, it is only represented by a small icon in the system tray. If we select the icon with the left mouse button, we will have access to all the options that the program offers, and we will be able to configure it in a quick and simple manner.
All in all, if you want to give your Windows XP copy a special touch, download and install UberIcon.