Ill skip the obvious a large memory card.
Top one is Madcatz USB connector, and charger, with battery extender - one less psu to worry about and less vists to charge her up with double the battery power.
Second for me is my Apacer steno - 40 gigs of stuff to move onto the psp, anywhere, plus as the advantage of talking to other usb kit - so if my digi cameras full, I can trasfer pics onto the steno and carry on, battery permitting, also a hell of alot cheaper than the 4 gig micro drive.
Bookmarks