I used to buy 24 or 48 packs of bottled water at the store. I never realized how wasteful I was being by doing that. Instead, I spent $6 and bought myself a reusable water bottle. Not the kind that you see on a bike, but more of a camper’s water bottle. It is rugged and durable and I could, in theory, hook it onto my bag with the hook it came with. I don’t plan on doing that. But it really opens up a lot of options for me. I fill it up every day before I go to class and I drink it throughout the day. It has a really large top, so filling it up from the drinking fountain or sink is easy too. Plus, it helps me get my 5-7 glasses of water a day. I know that most people don’t believe the benefits of that, but I’m telling you, I really feel the difference.