I studied the document describing how to develop a desktop applet for Hildon desktop as well as GNOME. Before this, I thought writing an applet is difficult, at least cumbersome. It is a wrong idea. The GNOME desktop has evolved many generations and developers all over the world have contributed many to it. I should dig into it and see if there is anything I can do for this before I make any judgement.
A horoscope applet that gets personal horoscope daily from websites might be useful and also a good starting point for me.