Eco & Budget Friendly Water Bottles

I saw these "Bobbles" advertised in Shape that claim to filter regular tap water for up to 12 weeks. Do you know how many bottles of water we (read: I) go through in 3 months?? I checked out their website (http://www.waterbobble.com/) to see where I could purchase them (I didn't want to pay shipping & handling on their site). Much to my surprise Cracker Barrel (!!!!) carries them. We picked up one this evening and so far... so good! Bobbles are made from recycled materials and come in 6 fun colors. You can pick up a replacement filter for around $7. I feel like this way I am helping cut down on the number of bottles we use AND helping to save some cash.