What PSP accessories do u have?

hi friends
i am newbie here and the same as all of u, i like playing viedo games very much! now i want to know where are ur accessories bought and what do u have owned?
a friends suggesed me a online site for PSP accessories, what's ur opinion? pls share with us! :)

The only necessities would be a big memory stick and an extra battery. Other than that it's your preference.

Im buying a 4 gb stick this week ;)