Micro Innovations TSP477P Laser Pointer / Stylus / Pen
Not Essential, but Still Very Usefull
I thought that this pen was very useful.  Though not essential, it is definately handy.  I am not too sure of how often one will use the laser-pointer, but I know that one will have fun with it!  It is a good buy, considering that it eliminates the need to waste time switching from a regular pen to your stylus.  It is nice to be able to scribble a few things on a notepad and then instantly jot a few reminders in your PDA.