Necessities

Everyone has a routine, certain tools they need to have an effective writing session. As I'm settling down to attack the last two chapters of my book (yet again), there are a few things I need:

My flash drive.

My kitchen timer, for timed writing sessions (ya notice a theme?)

And a snack (these are the best thing since those chocolate-covered marshmallow eggs you can only get around Easter)

What about you? What are your writing necessities?