As others have said, ginger and saltines help. Eating frequently. Fresh air.
Other things that helped me last time: wearing a 'ninja mask' when cooking (ie covering my nose and mouth so I couldn't smell as well - sweat shirts work well for this), Cheerios, drinking acidic juice (usually grape or orange), and really salty food. I preferred plain potato chips. I know, it's not exactly health food, but there were times when it was the only thing that calmed down my stomach. And also things that keep your saliva flowing, like hard candy or chewing gum.
Also, I found that for me my morning sickness was pretty much tied to my stomach acid. I had really awful heartburn in the first trimester, and I had to take zantac every day. If I was late taking my pill, I was liable to spend a lot of time gagging that day.
I've heard other ladies say that lemons really helped their morning sickness, so that might be worth a try, too.
Originally Posted by finnegansmom
I also find fresh air helps. My worst pregnancy for nausea was when the first trimester was Dec and Jan...ugh cooped up inside all day made me feel horrid.
See, now, I found the cold air extra helpful for me. I remember running from the kitchen to take deep gulps of cold air before covering my mouth and nose again and returning to making dinner. I must have looked really stupid, but it worked!