A SET OF 6 BUNSEN BEAKERS
Move over mason jars, you're so last year. Nothing says cocktail time like a bunsen beaker. They have the advantage of being incredibly sturdy and ample-sized. They also are useful in the kitchen for all manner of mixology and cooking. These beakers stand up well to very high heat (of course, remember Chemistry class?) and don't mind a little nuking in the microwave.
These beakers are slimmer than the more traditional bunsen beakers, and feel great to grip in one's hand.
A cook and mixologist's favorite!