Haven't you ever been driven by temptation to freely scribble on your Desktop? I know some desktop painting applications, but not about those which can "make believe" that I'm entering characters directly from the keyboard to the Desktop. I'm using Screeble to leave a message or a warning on the Desktop as shown. This is also useful to prevent your computer from unfavorable accesses.
This program works under Windows Vista and earlier, 7, 8, 8.1 and 10 with no modification to Windows.