Klean Kanteen – To go along with my SteriPEN, I’ve now taken to carrying a water bottle when I travel. Klean Kanteens come in wide range of sizes, colors and mouth sizes allowing you to choose the right one for your needs whether it’s travel, home, work or sporting events. Most importantly, these are BPA-free AND will help you reduce the amount of waste you’re leaving behind when you stop buying bottles of water! Available on Amazon starting at $7.