The hair dryers are pretty much worthless unless you have a crew cut or very short, fine hair. If you have any length or thickness to your hair, bring your own from home.
When you arrive and every fourth day thereafter, you will get additional supplies. That includes one, maybe two filtered pouches of coffee (and it's not that good if you are a coffee freak). You'll need to bring your own filters (basket type) and coffee. Or bring the prefiltered pouches like Maxwell House has.
You'll get a single use box of Tide regular every four days. So if you wash more than one load, you'll need to bring more, or buy more. Also, if you use fabric softener, you'll need that.
They provide paper towels, hand soap, shower gel, shampoo, conditioner (one small bottle per bathing location - shower, tub, shower/tub combo). You'll need sugar, salt, pepper.