I like to see everything laid out to know if I'm happy with my choices!
I love the idea of using bags that my friends can reuse over and over again.
My thoughts for what people actually want and will use in their goodie bag; tailor it to what you know your friends love.
If you want to go the custom route, these are a few things I think everyone will actually want to take home. Also, I'd stick to just adding your friend's names and nothing to do with your bachelorette or wedding info - that makes it less usable when ...