Put the Windows Vista address bar in Windows XP.
Utility that allows you to make the Windows taskbar transparent, opaque or translucent.

Put the task bar in Windows 7 not in Windows XP.
Make your Windows 7/8/8.1/10 look like GTA V.
Software that transforms your screen into a dynamic screensaver, displaying slideshows of personal images or from the internet.
Hide inactive desktop icons to show your wallpaper better.