Just missing a gnat pattern like a Griffiths gnat and zebra midge
An articulated type streamer
an egg pattern. I LIKE CRYSTAL METH
All the flys mentioned, I think, will catch fish just about anywhere. Add a couple of local favorites and you should be good to go. That being said size means a lot too.
My fly boxes are a hodge podge of flys, some I have no clue where they came from, but there are days when none of them work.