What a great idea!
If this is your first trip overseas please take time to make sure that all of your prescriptions are legal in the countries that you are going to. I mentioned this to a friend of mine a few years ago when she was traveling to Lithuania and when she checked, several of hers had to be changed. She was so happy to have been saved from highly possible arrest. Just because certain meds are legal here doesn't mean they are in other countries and a lot of countries have a 0 tolerance for what they deem as illegal drugs.