Life Straw, preppier, for the avid outdoors-person, or survivalist

Promising review: I would recommend the LifeStraw for any backpacker. Even a day hiker. This lightweight tool can help reduce your pack weight significantly if you know there will be a decent source of water nearby. Drinking water from a cool stream tastes so much better than iodine treated water. I've used the same LifeStraw five or six times now and have had no health issues at all.