An easy and necessary little step to take is changing your plastic water bottle to a metallic or glass one. The next step it to actually use it and refill it. If you, like me, live in a country where tap water is clean and drinkable this is a must-do.
My metallic bottle is one I got a long time ago from 4H but did not use regularly until recently. Today it goes with me everywhere. I love that it has a carbine and can hang on my bag, otherwise I would have to leave it behind a lot.
Which kind of bottle do you use?