College Science Student's Everday Carry

This are all the tools and utilities that I have found I need every day in order to complete my studies efficiently and effectively. I use the majority of these things on a daily, and in many cases hourly, basis while I am at my college campus throughout the day. It is all light and can be kept in my backpack for hours before I start to fatigue, which is good since there are a lot of hills on my campus and I seem to always have to walk across campus at least once a week between classes. With this gear I have never been wishing I brought anything to my classes or to my labs, and so I can stick to my studies and get everything done.