If the hit show Mad Men has taught us anything, it's how to indulge in a round of grown-up drinks in style. For those who love a throwback cocktail party—or simply a quiet night spent by the fire with a drink in hand—this twist on an old classic will cool down a whisky served neat without watering it down. The secret to the cubes' chilling power is in their 100% soapstone design, which maintains a steady temperature over long periods of time. When you're ready to call it a night, just wash the stones and and toss them back in the freezer for your next party. Available on Amazon; $6.94.