I find ginger is helpful, ginger ale, ginger biscuits etc, also I've been taking vitamin B6 as some say it can reduce morning sickness, I've still had some sickness and nausea but so far less than my previous pregnancy so I'd say its worth a try. I also wear travel sickness accupressure wristbands which help a bit.
If you can't stay hydrated then that's bad for you and baby so it may be worth getting anti sickness medication from your doctor. I had some last time that really helped. Some doctors are reluctant to prescribe them as no meds are considered 100% safe in pregnancy but many are very safe, they just don't test drugs on pregnant women so they don't have the statistics. If they feel you and/or your baby are at risk if dehydration then they will treat you.
I'm going to try that with the ginger. Maybe do it with crackers and tea. I'll try the bracelets as well.
As far as keeping stuff down. I'm finding it's solids I have the most trouble with. I can drink water, juice, tea, coffee, diet soda, broth, soup, smoothies and ice cream no problem. It's when I eat that I get the most nauseous. I'm getting a little tired of just having soup and protein shakes. I want to be able to keep something substantial down.