Best accessories for an Ipad?

now that I have an iPad I am looking at acessories and 'goodies' for my new treasure. I do have a smart cover that does work, and a Targus bag that already sports my name but am looking at screen protectors and skins, stands and so forth. I would love to see suggestions from iPad owners as to what accessories they have and if they felt it was a good investment or a poor buy. So, anyone have suggestions for a new owner as to what should be on that 'buying list'.