What do you pack for a retreat?

Post Strengths-finder, Post Hillsong, Post Journey - Impact, I've got Some Things to Process, so after I do a trip to a local sporting venue with the Toba on Saturday morning, I'm going to handball him back to wifey, and take off for a few hours to meditate, pray, and wait.

Not the sort of thing I do all that often: what do YOU take when you do the time-away-with-my-thoughts-and-God thing?

I've got-
-bible
-notepad & pen
-melways
-tank of petrol
-water bottle
-iPod (specifically some worship music to set the mood, just in case)