What foods can you stomach with your morning sickness?

I'm about 5.5 weeks, and the past few days, I've been feeling nauseous all day long. I haven't gotten sick yet, but I've gagged a couple times this morning, so I know now it's only a matter of time. I have no appetite whatsoever. I know I need to eat, but nothing looks, smells, or sounds appetizing. What foods have been lifesavers for you and your baby through the morning sickness?