Why not have bottles of water with on-demand vitamin infusement capability. Perhaps the bottom of this new next-gen water bottle has a place to hold tiny effervescent vitamin capsules that can be replenished. You press a button and your water becomes infused with vitamins and minerals while adding flavor and zing to the water itself. When you are done, you press the button for the 'cleaner' tablet, shake the bottle out with water, and fill it up again!

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