A paper bag for hypperventilation usage

A mattress for when you see the first question and decide to faint

A toilet for all the bullshit and word-vomit that's going to come out of your pen

A suitably blank expression for all those seconds spent staring at the clock, watching the time slip through your fingers

A suitably pissed off expression for when the person next to you asks for more paper when you haven't even finished one booklet

An extraordinary capacity for hope... 'cause that's the only thing keeping you from breaking out into hysterics

A lot of luck - to ensure that the stimulus for creative writing matches your prepared story.