Kudos to the makers of Bobble, for creating reusable water bottles with built-in filters. Brilliant! Just fill ‘em up with tap or fountain water anywhere you go, and squeeze out the fresh, filtered water to fill your kid’s sippy, prepare a bottle of formula, or keep your own dear self hydrated. They’re BPA-free (of course), available in six bright colors, and can be used about 300 times before the filter needs to be replaced. $9.95 at waterbobble.com.