What are good snacks to eat to prevent nausea?

I'm 6 1/2 weeks pregnant and have been nauseous all day long since about 4 weeks. I found that eating a snack about every hour helps to prevent it, or makes it so it's not as bad. Do any of you have any idea of snacks to eat throughout the day? I've mostly been eating crackers but I'm getting really bored with eating them all day long. The doctor also suggested dramamine, but I'd like to avoid taking it if I can prevent the nausea myself. Any suggestions will help! Thanks guys