The bare essentials are food and water. No problem. I have my ID card, and with it, I can buy stuff from the cafeteria during certain hours. Then there's the snack bar that's open 24/7. But for when I am too busy and too far away, I try to carry a supply of dimes for the snack machines. (Dollars are an iffy proposition, and dimes are lighter than quarters!) I also know where to steal graham crackers and sodas (in event of an emergency! :)).
But that leaves my personal hygiene. Towards the end of this ordeal, I can find myself feeling pretty rank. There are several places where I can find a hot shower and soap. But for toothpaste, toothbrush, and my essential LA Looks Megahold hair gel, I'm on my own. I have stretegically placed a bottle of said miracle gel in my call room... but that's wishful thinking. Often, I see this call room and it's comfy bed only twice... once when I get to work to drop off my things, and once before I leave to pick up my things. What I really need is something more pocket-sized. And here it is.
I will demonstrate on toothpaste, since I already have a packet of hair gel prepared.