Also a interesting MOD is to create custom Application / Desktop Icons for specific tasks or functions.

For example how to create an icon that starts "top"-command within Xterm is described here
http://talk.maemo.org/showthread.php?t=35858

or how to launche a web radio stream with one click on a custom Icon / Shortcut is described here
http://talk.maemo.org/showthread.php?p=461072

I am sure a lot more useful things can be done this easy way...