If plain old water doesn't quench your palate, but you don't want to spring for a fancy flavour-enhanced pre-bottled alternative, feast your eyes upon the Aqua Zinger DIY H2O infuser. It lets you imbue your water with everything from fresh fruit essences, to spices, to jelly babies.
What's particularly neat is that you don't need to plug the Aqua Zinger in or ever charge a battery. The blending mechanism is completely manual. You just fill the bottom capsule with whatever you'd like your water to taste like, and attach it to the bottle. The act of screwing it onto the Zinger's base pulverises and blends what's inside, while a fine mesh screen ensures that only your water can flow between the chambers and absorb the flavours. The website suggests such ingredients as cucumber, mint, or lemon and lime. But deep down you know you've always wanted Evian to introduce a Skittles or Starburst option.