I did feel queasy and have some aversions (couldn't stand diced tomatoes, lol). But on the whole I had an awesome first trimester with my last baby, especially when compared to the 20 weeks of morning sickness with the one before that! Here's what I did (I pulled out all the stops):
Ate from the time I got up until I went to bed: snack upon waking, breakfast, mid-morning snack, lunch, afternoon snack, supper, before-bed snack. Always protein with the snacks, generally protein and a carb. I always had several snack-y type things with me if I needed to be out and about.
Wore Sea Bands (I had a Sea Band tan line. Sexy!)
Took B6 3x a day (25mg each dose), also took a 1000mg time-release B12 every day
Doubled a bunch of meals as soon as I got the positive pregnancy test - pulled those out of the freezer when I felt bad.
Got healthy "comfort foods" (like full-fat Greek yogurt cups, peanut butter, trail mix, etc.) for easy snacks
Rested as much as possible