A seasoned traveler once told me, I never leave home without a small ziplock bag of baking soda as it has 101 uses. Here are a few...
Did you know that it helps relieve insect bites and razor burn after shaving armpits?
Baking soda removes stains from clothing, and acts as a mild deodorant as well.
You can even use it to clean gas permeable contact lens while on the road. Just remember to rinse them very, very well.
Forgot your toothpaste? Don't worry. Just sprinkle baking soda on your tooth brush and brush as normal.
What have you used it for when traveling?